81689920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:372

約数の個数: 112

約数和(自身を含む): 213146640

約数和(自身を除く): 131456720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 73, 80, 104, 130, 146, 160, 208, 260, 269, 292, 320, 365, 416, 520, 538, 584, 730, 832, 949, 1040, 1076, 1168, 1345, 1460, 1898, 2080, 2152, 2336, 2690, 2920, 3497, 3796, 4160, 4304, 4672, 4745, 5380, 5840, 6994, 7592, 8608, 9490, 10760, 11680, 13988, 15184, 17216, 17485, 18980, 19637, 21520, 23360, 27976, 30368, 34970, 37960, 39274, 43040, 55952, 60736, 69940, 75920, 78548, 86080, 98185, 111904, 139880, 151840, 157096, 196370, 223808, 255281, 279760, 303680, 314192, 392740, 510562, 559520, 628384, 785480, 1021124, 1119040, 1256768, 1276405, 1570960, 2042248, 2552810, 3141920, 4084496, 5105620, 6283840, 8168992, 10211240, 16337984, 20422480, 40844960, 81689920]

約数ペア:

[(1, 81689920), (2, 40844960), (4, 20422480), (5, 16337984), (8, 10211240), (10, 8168992), (13, 6283840), (16, 5105620), (20, 4084496), (26, 3141920), (32, 2552810), (40, 2042248), (52, 1570960), (64, 1276405), (65, 1256768), (73, 1119040), (80, 1021124), (104, 785480), (130, 628384), (146, 559520), (160, 510562), (208, 392740), (260, 314192), (269, 303680), (292, 279760), (320, 255281), (365, 223808), (416, 196370), (520, 157096), (538, 151840), (584, 139880), (730, 111904), (832, 98185), (949, 86080), (1040, 78548), (1076, 75920), (1168, 69940), (1345, 60736), (1460, 55952), (1898, 43040), (2080, 39274), (2152, 37960), (2336, 34970), (2690, 30368), (2920, 27976), (3497, 23360), (3796, 21520), (4160, 19637), (4304, 18980), (4672, 17485), (4745, 17216), (5380, 15184), (5840, 13988), (6994, 11680), (7592, 10760), (8608, 9490)]