19388020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31271}}^1$

素因数の和:31311

約数の個数: 24

約数和(自身を含む): 42029568

約数和(自身を除く): 22641548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31271, 62542, 125084, 156355, 312710, 625420, 969401, 1938802, 3877604, 4847005, 9694010, 19388020]

約数ペア:

[(1, 19388020), (2, 9694010), (4, 4847005), (5, 3877604), (10, 1938802), (20, 969401), (31, 625420), (62, 312710), (124, 156355), (155, 125084), (310, 62542), (620, 31271)]