256308320

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:313

約数の個数: 144

約数和(自身を含む): 673995168

約数和(自身を除く): 417686848

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 68, 80, 85, 92, 115, 136, 160, 170, 184, 230, 241, 272, 289, 340, 368, 391, 460, 482, 544, 578, 680, 736, 782, 920, 964, 1156, 1205, 1360, 1445, 1564, 1840, 1928, 1955, 2312, 2410, 2720, 2890, 3128, 3680, 3856, 3910, 4097, 4624, 4820, 5543, 5780, 6256, 6647, 7712, 7820, 8194, 9248, 9640, 11086, 11560, 12512, 13294, 15640, 16388, 19280, 20485, 22172, 23120, 26588, 27715, 31280, 32776, 33235, 38560, 40970, 44344, 46240, 53176, 55430, 62560, 65552, 66470, 69649, 81940, 88688, 94231, 106352, 110860, 131104, 132940, 139298, 163880, 177376, 188462, 212704, 221720, 265880, 278596, 327760, 348245, 376924, 443440, 471155, 531760, 557192, 655520, 696490, 753848, 886880, 942310, 1063520, 1114384, 1392980, 1507696, 1601927, 1884620, 2228768, 2785960, 3015392, 3203854, 3769240, 5571920, 6407708, 7538480, 8009635, 11143840, 12815416, 15076960, 16019270, 25630832, 32038540, 51261664, 64077080, 128154160, 256308320]

約数ペア:

[(1, 256308320), (2, 128154160), (4, 64077080), (5, 51261664), (8, 32038540), (10, 25630832), (16, 16019270), (17, 15076960), (20, 12815416), (23, 11143840), (32, 8009635), (34, 7538480), (40, 6407708), (46, 5571920), (68, 3769240), (80, 3203854), (85, 3015392), (92, 2785960), (115, 2228768), (136, 1884620), (160, 1601927), (170, 1507696), (184, 1392980), (230, 1114384), (241, 1063520), (272, 942310), (289, 886880), (340, 753848), (368, 696490), (391, 655520), (460, 557192), (482, 531760), (544, 471155), (578, 443440), (680, 376924), (736, 348245), (782, 327760), (920, 278596), (964, 265880), (1156, 221720), (1205, 212704), (1360, 188462), (1445, 177376), (1564, 163880), (1840, 139298), (1928, 132940), (1955, 131104), (2312, 110860), (2410, 106352), (2720, 94231), (2890, 88688), (3128, 81940), (3680, 69649), (3856, 66470), (3910, 65552), (4097, 62560), (4624, 55430), (4820, 53176), (5543, 46240), (5780, 44344), (6256, 40970), (6647, 38560), (7712, 33235), (7820, 32776), (8194, 31280), (9248, 27715), (9640, 26588), (11086, 23120), (11560, 22172), (12512, 20485), (13294, 19280), (15640, 16388)]