18788980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{134207}}^1$

素因数の和:134223

約数の個数: 24

約数和(自身を含む): 45093888

約数和(自身を除く): 26304908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 134207, 268414, 536828, 671035, 939449, 1342070, 1878898, 2684140, 3757796, 4697245, 9394490, 18788980]

約数ペア:

[(1, 18788980), (2, 9394490), (4, 4697245), (5, 3757796), (7, 2684140), (10, 1878898), (14, 1342070), (20, 939449), (28, 671035), (35, 536828), (70, 268414), (140, 134207)]