165081980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{168451}}^1$

素因数の和:168474

約数の個数: 36

約数和(自身を含む): 403274088

約数和(自身を除く): 238192108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 168451, 336902, 673804, 842255, 1179157, 1684510, 2358314, 3369020, 4716628, 5895785, 8254099, 11791570, 16508198, 23583140, 33016396, 41270495, 82540990, 165081980]

約数ペア:

[(1, 165081980), (2, 82540990), (4, 41270495), (5, 33016396), (7, 23583140), (10, 16508198), (14, 11791570), (20, 8254099), (28, 5895785), (35, 4716628), (49, 3369020), (70, 2358314), (98, 1684510), (140, 1179157), (196, 842255), (245, 673804), (490, 336902), (980, 168451)]