80381980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{574157}}^1$

素因数の和:574173

約数の個数: 24

約数和(自身を含む): 192917088

約数和(自身を除く): 112535108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 574157, 1148314, 2296628, 2870785, 4019099, 5741570, 8038198, 11483140, 16076396, 20095495, 40190990, 80381980]

約数ペア:

[(1, 80381980), (2, 40190990), (4, 20095495), (5, 16076396), (7, 11483140), (10, 8038198), (14, 5741570), (20, 4019099), (28, 2870785), (35, 2296628), (70, 1148314), (140, 574157)]