21042640

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7109}}^1$

素因数の和:7159

約数の個数: 40

約数和(自身を含む): 50253480

約数和(自身を除く): 29210840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7109, 14218, 28436, 35545, 56872, 71090, 113744, 142180, 263033, 284360, 526066, 568720, 1052132, 1315165, 2104264, 2630330, 4208528, 5260660, 10521320, 21042640]

約数ペア:

[(1, 21042640), (2, 10521320), (4, 5260660), (5, 4208528), (8, 2630330), (10, 2104264), (16, 1315165), (20, 1052132), (37, 568720), (40, 526066), (74, 284360), (80, 263033), (148, 142180), (185, 113744), (296, 71090), (370, 56872), (592, 35545), (740, 28436), (1480, 14218), (2960, 7109)]