65214920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22963}}^1$

素因数の和:23045

約数の個数: 32

約数和(自身を含む): 148806720

約数和(自身を除く): 83591800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 22963, 45926, 91852, 114815, 183704, 229630, 459260, 918520, 1630373, 3260746, 6521492, 8151865, 13042984, 16303730, 32607460, 65214920]

約数ペア:

[(1, 65214920), (2, 32607460), (4, 16303730), (5, 13042984), (8, 8151865), (10, 6521492), (20, 3260746), (40, 1630373), (71, 918520), (142, 459260), (284, 229630), (355, 183704), (568, 114815), (710, 91852), (1420, 45926), (2840, 22963)]