280204240

素因数分解:

$2^4\times 5^1\times {\mathrm{3502553}}^1$

素因数の和:3502566

約数の個数: 20

約数和(自身を含む): 651475044

約数和(自身を除く): 371270804

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3502553, 7005106, 14010212, 17512765, 28020424, 35025530, 56040848, 70051060, 140102120, 280204240]

約数ペア:

[(1, 280204240), (2, 140102120), (4, 70051060), (5, 56040848), (8, 35025530), (10, 28020424), (16, 17512765), (20, 14010212), (40, 7005106), (80, 3502553)]