20004140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1637}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 26226772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1637, 2444, 3055, 3274, 6110, 6548, 8185, 12220, 16370, 21281, 32740, 42562, 76939, 85124, 106405, 153878, 212810, 307756, 384695, 425620, 769390, 1000207, 1538780, 2000414, 4000828, 5001035, 10002070, 20004140]

約数ペア:

[(1, 20004140), (2, 10002070), (4, 5001035), (5, 4000828), (10, 2000414), (13, 1538780), (20, 1000207), (26, 769390), (47, 425620), (52, 384695), (65, 307756), (94, 212810), (130, 153878), (188, 106405), (235, 85124), (260, 76939), (470, 42562), (611, 32740), (940, 21281), (1222, 16370), (1637, 12220), (2444, 8185), (3055, 6548), (3274, 6110)]