157400020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{253871}}^1$

素因数の和:253911

約数の個数: 24

約数和(自身を含む): 341203968

約数和(自身を除く): 183803948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 253871, 507742, 1015484, 1269355, 2538710, 5077420, 7870001, 15740002, 31480004, 39350005, 78700010, 157400020]

約数ペア:

[(1, 157400020), (2, 78700010), (4, 39350005), (5, 31480004), (10, 15740002), (20, 7870001), (31, 5077420), (62, 2538710), (124, 1269355), (155, 1015484), (310, 507742), (620, 253871)]