20944560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1$

素因数の和:180

約数の個数: 240

約数和(自身を含む): 81932256

約数和(自身を除く): 60987696

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 49, 52, 56, 60, 65, 70, 78, 80, 84, 91, 98, 104, 105, 112, 120, 130, 137, 140, 147, 156, 168, 182, 195, 196, 208, 210, 240, 245, 260, 273, 274, 280, 294, 312, 336, 364, 390, 392, 411, 420, 455, 490, 520, 546, 548, 560, 588, 624, 637, 685, 728, 735, 780, 784, 822, 840, 910, 959, 980, 1040, 1092, 1096, 1176, 1274, 1365, 1370, 1456, 1470, 1560, 1644, 1680, 1781, 1820, 1911, 1918, 1960, 2055, 2184, 2192, 2352, 2548, 2730, 2740, 2877, 2940, 3120, 3185, 3288, 3562, 3640, 3822, 3836, 3920, 4110, 4368, 4795, 5096, 5343, 5460, 5480, 5754, 5880, 6370, 6576, 6713, 7124, 7280, 7644, 7672, 8220, 8905, 9555, 9590, 10192, 10686, 10920, 10960, 11508, 11760, 12467, 12740, 13426, 14248, 14385, 15288, 15344, 16440, 17810, 19110, 19180, 20139, 21372, 21840, 23016, 24934, 25480, 26715, 26852, 28496, 28770, 30576, 32880, 33565, 35620, 37401, 38220, 38360, 40278, 42744, 46032, 49868, 50960, 53430, 53704, 57540, 62335, 67130, 71240, 74802, 76440, 76720, 80556, 85488, 87269, 99736, 100695, 106860, 107408, 115080, 124670, 134260, 142480, 149604, 152880, 161112, 174538, 187005, 199472, 201390, 213720, 230160, 249340, 261807, 268520, 299208, 322224, 349076, 374010, 402780, 427440, 436345, 498680, 523614, 537040, 598416, 698152, 748020, 805560, 872690, 997360, 1047228, 1309035, 1396304, 1496040, 1611120, 1745380, 2094456, 2618070, 2992080, 3490760, 4188912, 5236140, 6981520, 10472280, 20944560]

約数ペア:

[(1, 20944560), (2, 10472280), (3, 6981520), (4, 5236140), (5, 4188912), (6, 3490760), (7, 2992080), (8, 2618070), (10, 2094456), (12, 1745380), (13, 1611120), (14, 1496040), (15, 1396304), (16, 1309035), (20, 1047228), (21, 997360), (24, 872690), (26, 805560), (28, 748020), (30, 698152), (35, 598416), (39, 537040), (40, 523614), (42, 498680), (48, 436345), (49, 427440), (52, 402780), (56, 374010), (60, 349076), (65, 322224), (70, 299208), (78, 268520), (80, 261807), (84, 249340), (91, 230160), (98, 213720), (104, 201390), (105, 199472), (112, 187005), (120, 174538), (130, 161112), (137, 152880), (140, 149604), (147, 142480), (156, 134260), (168, 124670), (182, 115080), (195, 107408), (196, 106860), (208, 100695), (210, 99736), (240, 87269), (245, 85488), (260, 80556), (273, 76720), (274, 76440), (280, 74802), (294, 71240), (312, 67130), (336, 62335), (364, 57540), (390, 53704), (392, 53430), (411, 50960), (420, 49868), (455, 46032), (490, 42744), (520, 40278), (546, 38360), (548, 38220), (560, 37401), (588, 35620), (624, 33565), (637, 32880), (685, 30576), (728, 28770), (735, 28496), (780, 26852), (784, 26715), (822, 25480), (840, 24934), (910, 23016), (959, 21840), (980, 21372), (1040, 20139), (1092, 19180), (1096, 19110), (1176, 17810), (1274, 16440), (1365, 15344), (1370, 15288), (1456, 14385), (1470, 14248), (1560, 13426), (1644, 12740), (1680, 12467), (1781, 11760), (1820, 11508), (1911, 10960), (1918, 10920), (1960, 10686), (2055, 10192), (2184, 9590), (2192, 9555), (2352, 8905), (2548, 8220), (2730, 7672), (2740, 7644), (2877, 7280), (2940, 7124), (3120, 6713), (3185, 6576), (3288, 6370), (3562, 5880), (3640, 5754), (3822, 5480), (3836, 5460), (3920, 5343), (4110, 5096), (4368, 4795)]