20122840

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1033}}^1$

素因数の和:1531

約数の個数: 32

約数和(自身を含む): 45413280

約数和(自身を除く): 25290440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1033, 1948, 2066, 2435, 3896, 4132, 4870, 5165, 8264, 9740, 10330, 19480, 20660, 41320, 503071, 1006142, 2012284, 2515355, 4024568, 5030710, 10061420, 20122840]

約数ペア:

[(1, 20122840), (2, 10061420), (4, 5030710), (5, 4024568), (8, 2515355), (10, 2012284), (20, 1006142), (40, 503071), (487, 41320), (974, 20660), (1033, 19480), (1948, 10330), (2066, 9740), (2435, 8264), (3896, 5165), (4132, 4870)]