256584750640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2287}}^1\times {\mathrm{2381}}^1$

素因数の和:4731

約数の個数: 160

約数和(自身を含む): 648769904640

約数和(自身を除く): 392185154000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1178, 1240, 1520, 2287, 2356, 2381, 2480, 2945, 4574, 4712, 4762, 5890, 9148, 9424, 9524, 11435, 11780, 11905, 18296, 19048, 22870, 23560, 23810, 36592, 38096, 43453, 45239, 45740, 47120, 47620, 70897, 73811, 86906, 90478, 91480, 95240, 141794, 147622, 173812, 180956, 182960, 190480, 217265, 226195, 283588, 295244, 347624, 354485, 361912, 369055, 434530, 452390, 567176, 590488, 695248, 708970, 723824, 738110, 869060, 904780, 1134352, 1180976, 1347043, 1402409, 1417940, 1476220, 1738120, 1809560, 2694086, 2804818, 2835880, 2952440, 3476240, 3619120, 5388172, 5445347, 5609636, 5671760, 5904880, 6735215, 7012045, 10776344, 10890694, 11219272, 13470430, 14024090, 21552688, 21781388, 22438544, 26940860, 27226735, 28048180, 43562776, 53881720, 54453470, 56096360, 87125552, 103461593, 107763440, 108906940, 112192720, 168805757, 206923186, 217813880, 337611514, 413846372, 435627760, 517307965, 675223028, 827692744, 844028785, 1034615930, 1350446056, 1655385488, 1688057570, 2069231860, 2700892112, 3207309383, 3376115140, 4138463720, 6414618766, 6752230280, 8276927440, 12829237532, 13504460560, 16036546915, 25658475064, 32073093830, 51316950128, 64146187660, 128292375320, 256584750640]

約数ペア:

[(1, 256584750640), (2, 128292375320), (4, 64146187660), (5, 51316950128), (8, 32073093830), (10, 25658475064), (16, 16036546915), (19, 13504460560), (20, 12829237532), (31, 8276927440), (38, 6752230280), (40, 6414618766), (62, 4138463720), (76, 3376115140), (80, 3207309383), (95, 2700892112), (124, 2069231860), (152, 1688057570), (155, 1655385488), (190, 1350446056), (248, 1034615930), (304, 844028785), (310, 827692744), (380, 675223028), (496, 517307965), (589, 435627760), (620, 413846372), (760, 337611514), (1178, 217813880), (1240, 206923186), (1520, 168805757), (2287, 112192720), (2356, 108906940), (2381, 107763440), (2480, 103461593), (2945, 87125552), (4574, 56096360), (4712, 54453470), (4762, 53881720), (5890, 43562776), (9148, 28048180), (9424, 27226735), (9524, 26940860), (11435, 22438544), (11780, 21781388), (11905, 21552688), (18296, 14024090), (19048, 13470430), (22870, 11219272), (23560, 10890694), (23810, 10776344), (36592, 7012045), (38096, 6735215), (43453, 5904880), (45239, 5671760), (45740, 5609636), (47120, 5445347), (47620, 5388172), (70897, 3619120), (73811, 3476240), (86906, 2952440), (90478, 2835880), (91480, 2804818), (95240, 2694086), (141794, 1809560), (147622, 1738120), (173812, 1476220), (180956, 1417940), (182960, 1402409), (190480, 1347043), (217265, 1180976), (226195, 1134352), (283588, 904780), (295244, 869060), (347624, 738110), (354485, 723824), (361912, 708970), (369055, 695248), (434530, 590488), (452390, 567176)]