81653560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1637}}^1$

素因数の和:1720

約数の個数: 64

約数和(自身を含む): 194594400

約数和(自身を除く): 112940840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 43, 58, 86, 116, 145, 172, 215, 232, 290, 344, 430, 580, 860, 1160, 1247, 1637, 1720, 2494, 3274, 4988, 6235, 6548, 8185, 9976, 12470, 13096, 16370, 24940, 32740, 47473, 49880, 65480, 70391, 94946, 140782, 189892, 237365, 281564, 351955, 379784, 474730, 563128, 703910, 949460, 1407820, 1898920, 2041339, 2815640, 4082678, 8165356, 10206695, 16330712, 20413390, 40826780, 81653560]

約数ペア:

[(1, 81653560), (2, 40826780), (4, 20413390), (5, 16330712), (8, 10206695), (10, 8165356), (20, 4082678), (29, 2815640), (40, 2041339), (43, 1898920), (58, 1407820), (86, 949460), (116, 703910), (145, 563128), (172, 474730), (215, 379784), (232, 351955), (290, 281564), (344, 237365), (430, 189892), (580, 140782), (860, 94946), (1160, 70391), (1247, 65480), (1637, 49880), (1720, 47473), (2494, 32740), (3274, 24940), (4988, 16370), (6235, 13096), (6548, 12470), (8185, 9976)]