208780020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1159889}}^1$

素因数の和:1159904

約数の個数: 36

約数和(自身を含む): 633299940

約数和(自身を除く): 424519920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1159889, 2319778, 3479667, 4639556, 5799445, 6959334, 10439001, 11598890, 13918668, 17398335, 20878002, 23197780, 34796670, 41756004, 52195005, 69593340, 104390010, 208780020]

約数ペア:

[(1, 208780020), (2, 104390010), (3, 69593340), (4, 52195005), (5, 41756004), (6, 34796670), (9, 23197780), (10, 20878002), (12, 17398335), (15, 13918668), (18, 11598890), (20, 10439001), (30, 6959334), (36, 5799445), (45, 4639556), (60, 3479667), (90, 2319778), (180, 1159889)]