8165140

素因数分解:

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

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 17200512

約数和(自身を除く): 9035372

約数列:

[1, 2, 4, 5, 10, 20, 631, 647, 1262, 1294, 2524, 2588, 3155, 3235, 6310, 6470, 12620, 12940, 408257, 816514, 1633028, 2041285, 4082570, 8165140]

約数ペア:

[(1, 8165140), (2, 4082570), (4, 2041285), (5, 1633028), (10, 816514), (20, 408257), (631, 12940), (647, 12620), (1262, 6470), (1294, 6310), (2524, 3235), (2588, 3155)]