20355580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20771}}^1$

素因数の和:20794

約数の個数: 36

約数和(自身を含む): 49728168

約数和(自身を除く): 29372588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20771, 41542, 83084, 103855, 145397, 207710, 290794, 415420, 581588, 726985, 1017779, 1453970, 2035558, 2907940, 4071116, 5088895, 10177790, 20355580]

約数ペア:

[(1, 20355580), (2, 10177790), (4, 5088895), (5, 4071116), (7, 2907940), (10, 2035558), (14, 1453970), (20, 1017779), (28, 726985), (35, 581588), (49, 415420), (70, 290794), (98, 207710), (140, 145397), (196, 103855), (245, 83084), (490, 41542), (980, 20771)]