256961120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:114

約数の個数: 192

約数和(自身を含む): 712514880

約数和(自身を除く): 455553760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 43, 52, 65, 68, 80, 85, 86, 104, 130, 136, 160, 169, 170, 172, 208, 215, 221, 260, 272, 338, 340, 344, 416, 430, 442, 520, 544, 559, 676, 680, 688, 731, 845, 860, 884, 1040, 1105, 1118, 1352, 1360, 1376, 1462, 1690, 1720, 1768, 2080, 2197, 2210, 2236, 2704, 2720, 2795, 2873, 2924, 3380, 3440, 3536, 3655, 4394, 4420, 4472, 5408, 5590, 5746, 5848, 6760, 6880, 7072, 7267, 7310, 8788, 8840, 8944, 9503, 10985, 11180, 11492, 11696, 13520, 14365, 14534, 14620, 17576, 17680, 17888, 19006, 21970, 22360, 22984, 23392, 27040, 28730, 29068, 29240, 35152, 35360, 36335, 37349, 38012, 43940, 44720, 45968, 47515, 57460, 58136, 58480, 70304, 72670, 74698, 76024, 87880, 89440, 91936, 94471, 95030, 114920, 116272, 116960, 123539, 145340, 149396, 152048, 175760, 186745, 188942, 190060, 229840, 232544, 247078, 290680, 298792, 304096, 351520, 373490, 377884, 380120, 459680, 472355, 494156, 581360, 597584, 617695, 746980, 755768, 760240, 944710, 988312, 1162720, 1195168, 1235390, 1493960, 1511536, 1520480, 1606007, 1889420, 1976624, 2470780, 2987920, 3023072, 3212014, 3778840, 3953248, 4941560, 5975840, 6424028, 7557680, 8030035, 9883120, 12848056, 15115360, 16060070, 19766240, 25696112, 32120140, 51392224, 64240280, 128480560, 256961120]

約数ペア:

[(1, 256961120), (2, 128480560), (4, 64240280), (5, 51392224), (8, 32120140), (10, 25696112), (13, 19766240), (16, 16060070), (17, 15115360), (20, 12848056), (26, 9883120), (32, 8030035), (34, 7557680), (40, 6424028), (43, 5975840), (52, 4941560), (65, 3953248), (68, 3778840), (80, 3212014), (85, 3023072), (86, 2987920), (104, 2470780), (130, 1976624), (136, 1889420), (160, 1606007), (169, 1520480), (170, 1511536), (172, 1493960), (208, 1235390), (215, 1195168), (221, 1162720), (260, 988312), (272, 944710), (338, 760240), (340, 755768), (344, 746980), (416, 617695), (430, 597584), (442, 581360), (520, 494156), (544, 472355), (559, 459680), (676, 380120), (680, 377884), (688, 373490), (731, 351520), (845, 304096), (860, 298792), (884, 290680), (1040, 247078), (1105, 232544), (1118, 229840), (1352, 190060), (1360, 188942), (1376, 186745), (1462, 175760), (1690, 152048), (1720, 149396), (1768, 145340), (2080, 123539), (2197, 116960), (2210, 116272), (2236, 114920), (2704, 95030), (2720, 94471), (2795, 91936), (2873, 89440), (2924, 87880), (3380, 76024), (3440, 74698), (3536, 72670), (3655, 70304), (4394, 58480), (4420, 58136), (4472, 57460), (5408, 47515), (5590, 45968), (5746, 44720), (5848, 43940), (6760, 38012), (6880, 37349), (7072, 36335), (7267, 35360), (7310, 35152), (8788, 29240), (8840, 29068), (8944, 28730), (9503, 27040), (10985, 23392), (11180, 22984), (11492, 22360), (11696, 21970), (13520, 19006), (14365, 17888), (14534, 17680), (14620, 17576)]