256259640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:822

約数の個数: 256

約数和(自身を含む): 978001920

約数和(自身を除く): 721742280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 31, 35, 39, 40, 42, 52, 56, 60, 62, 65, 70, 78, 84, 91, 93, 104, 105, 120, 124, 130, 140, 155, 156, 168, 182, 186, 195, 210, 217, 248, 260, 273, 280, 310, 312, 364, 372, 390, 403, 420, 434, 455, 465, 520, 546, 620, 651, 728, 744, 757, 780, 806, 840, 868, 910, 930, 1085, 1092, 1209, 1240, 1302, 1365, 1514, 1560, 1612, 1736, 1820, 1860, 2015, 2170, 2184, 2271, 2418, 2604, 2730, 2821, 3028, 3224, 3255, 3640, 3720, 3785, 4030, 4340, 4542, 4836, 5208, 5299, 5460, 5642, 6045, 6056, 6510, 7570, 8060, 8463, 8680, 9084, 9672, 9841, 10598, 10920, 11284, 11355, 12090, 13020, 14105, 15140, 15897, 16120, 16926, 18168, 19682, 21196, 22568, 22710, 23467, 24180, 26040, 26495, 28210, 29523, 30280, 31794, 33852, 39364, 42315, 42392, 45420, 46934, 48360, 49205, 52990, 56420, 59046, 63588, 67704, 68887, 70401, 78728, 79485, 84630, 90840, 93868, 98410, 105980, 112840, 117335, 118092, 127176, 137774, 140802, 147615, 158970, 164269, 169260, 187736, 196820, 206661, 211960, 234670, 236184, 275548, 281604, 295230, 305071, 317940, 328538, 338520, 344435, 352005, 393640, 413322, 469340, 492807, 551096, 563208, 590460, 610142, 635880, 657076, 688870, 704010, 821345, 826644, 915213, 938680, 985614, 1033305, 1180920, 1220284, 1314152, 1377740, 1408020, 1525355, 1642690, 1653288, 1830426, 1971228, 2066610, 2135497, 2440568, 2464035, 2755480, 2816040, 3050710, 3285380, 3660852, 3942456, 4133220, 4270994, 4576065, 4928070, 6101420, 6406491, 6570760, 7321704, 8266440, 8541988, 9152130, 9856140, 10677485, 12202840, 12812982, 17083976, 18304260, 19712280, 21354970, 25625964, 32032455, 36608520, 42709940, 51251928, 64064910, 85419880, 128129820, 256259640]

約数ペア:

[(1, 256259640), (2, 128129820), (3, 85419880), (4, 64064910), (5, 51251928), (6, 42709940), (7, 36608520), (8, 32032455), (10, 25625964), (12, 21354970), (13, 19712280), (14, 18304260), (15, 17083976), (20, 12812982), (21, 12202840), (24, 10677485), (26, 9856140), (28, 9152130), (30, 8541988), (31, 8266440), (35, 7321704), (39, 6570760), (40, 6406491), (42, 6101420), (52, 4928070), (56, 4576065), (60, 4270994), (62, 4133220), (65, 3942456), (70, 3660852), (78, 3285380), (84, 3050710), (91, 2816040), (93, 2755480), (104, 2464035), (105, 2440568), (120, 2135497), (124, 2066610), (130, 1971228), (140, 1830426), (155, 1653288), (156, 1642690), (168, 1525355), (182, 1408020), (186, 1377740), (195, 1314152), (210, 1220284), (217, 1180920), (248, 1033305), (260, 985614), (273, 938680), (280, 915213), (310, 826644), (312, 821345), (364, 704010), (372, 688870), (390, 657076), (403, 635880), (420, 610142), (434, 590460), (455, 563208), (465, 551096), (520, 492807), (546, 469340), (620, 413322), (651, 393640), (728, 352005), (744, 344435), (757, 338520), (780, 328538), (806, 317940), (840, 305071), (868, 295230), (910, 281604), (930, 275548), (1085, 236184), (1092, 234670), (1209, 211960), (1240, 206661), (1302, 196820), (1365, 187736), (1514, 169260), (1560, 164269), (1612, 158970), (1736, 147615), (1820, 140802), (1860, 137774), (2015, 127176), (2170, 118092), (2184, 117335), (2271, 112840), (2418, 105980), (2604, 98410), (2730, 93868), (2821, 90840), (3028, 84630), (3224, 79485), (3255, 78728), (3640, 70401), (3720, 68887), (3785, 67704), (4030, 63588), (4340, 59046), (4542, 56420), (4836, 52990), (5208, 49205), (5299, 48360), (5460, 46934), (5642, 45420), (6045, 42392), (6056, 42315), (6510, 39364), (7570, 33852), (8060, 31794), (8463, 30280), (8680, 29523), (9084, 28210), (9672, 26495), (9841, 26040), (10598, 24180), (10920, 23467), (11284, 22710), (11355, 22568), (12090, 21196), (13020, 19682), (14105, 18168), (15140, 16926), (15897, 16120)]