20412850

素因数分解:

$2^1\times 5^2\times {\mathrm{631}}^1\times {\mathrm{647}}^1$

素因数の和:1290

約数の個数: 24

約数和(自身を含む): 38086848

約数和(自身を除く): 17673998

約数列:

[1, 2, 5, 10, 25, 50, 631, 647, 1262, 1294, 3155, 3235, 6310, 6470, 15775, 16175, 31550, 32350, 408257, 816514, 2041285, 4082570, 10206425, 20412850]

約数ペア:

[(1, 20412850), (2, 10206425), (5, 4082570), (10, 2041285), (25, 816514), (50, 408257), (631, 32350), (647, 31550), (1262, 16175), (1294, 15775), (3155, 6470), (3235, 6310)]