15820240

素因数分解:

$2^4\times 5^1\times {\mathrm{197753}}^1$

素因数の和:197766

約数の個数: 20

約数和(自身を含む): 36782244

約数和(自身を除く): 20962004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197753, 395506, 791012, 988765, 1582024, 1977530, 3164048, 3955060, 7910120, 15820240]

約数ペア:

[(1, 15820240), (2, 7910120), (4, 3955060), (5, 3164048), (8, 1977530), (10, 1582024), (16, 988765), (20, 791012), (40, 395506), (80, 197753)]