81559688

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 180299520

約数和(自身を除く): 98739832

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 73, 142, 146, 281, 284, 292, 497, 511, 562, 568, 584, 994, 1022, 1124, 1967, 1988, 2044, 2248, 3934, 3976, 4088, 5183, 7868, 10366, 15736, 19951, 20513, 20732, 36281, 39902, 41026, 41464, 72562, 79804, 82052, 139657, 143591, 145124, 159608, 164104, 279314, 287182, 290248, 558628, 574364, 1117256, 1148728, 1456423, 2912846, 5825692, 10194961, 11651384, 20389922, 40779844, 81559688]

約数ペア:

[(1, 81559688), (2, 40779844), (4, 20389922), (7, 11651384), (8, 10194961), (14, 5825692), (28, 2912846), (56, 1456423), (71, 1148728), (73, 1117256), (142, 574364), (146, 558628), (281, 290248), (284, 287182), (292, 279314), (497, 164104), (511, 159608), (562, 145124), (568, 143591), (584, 139657), (994, 82052), (1022, 79804), (1124, 72562), (1967, 41464), (1988, 41026), (2044, 39902), (2248, 36281), (3934, 20732), (3976, 20513), (4088, 19951), (5183, 15736), (7868, 10366)]