398080040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{268973}}^1$

素因数の和:269021

約数の個数: 32

約数和(自身を含む): 919891080

約数和(自身を除く): 521811040

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 268973, 537946, 1075892, 1344865, 2151784, 2689730, 5379460, 9952001, 10758920, 19904002, 39808004, 49760005, 79616008, 99520010, 199040020, 398080040]

約数ペア:

[(1, 398080040), (2, 199040020), (4, 99520010), (5, 79616008), (8, 49760005), (10, 39808004), (20, 19904002), (37, 10758920), (40, 9952001), (74, 5379460), (148, 2689730), (185, 2151784), (296, 1344865), (370, 1075892), (740, 537946), (1480, 268973)]