64503640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18119}}^1$

素因数の和:18219

約数の個数: 32

約数和(自身を含む): 146772000

約数和(自身を除く): 82268360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 18119, 36238, 72476, 90595, 144952, 181190, 362380, 724760, 1612591, 3225182, 6450364, 8062955, 12900728, 16125910, 32251820, 64503640]

約数ペア:

[(1, 64503640), (2, 32251820), (4, 16125910), (5, 12900728), (8, 8062955), (10, 6450364), (20, 3225182), (40, 1612591), (89, 724760), (178, 362380), (356, 181190), (445, 144952), (712, 90595), (890, 72476), (1780, 36238), (3560, 18119)]