19764550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2339}}^1$

素因数の和:2377

約数の個数: 36

約数和(自身を含む): 39824460

約数和(自身を除く): 20059910

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 2339, 4225, 4678, 8450, 11695, 23390, 30407, 58475, 60814, 116950, 152035, 304070, 395291, 760175, 790582, 1520350, 1976455, 3952910, 9882275, 19764550]

約数ペア:

[(1, 19764550), (2, 9882275), (5, 3952910), (10, 1976455), (13, 1520350), (25, 790582), (26, 760175), (50, 395291), (65, 304070), (130, 152035), (169, 116950), (325, 60814), (338, 58475), (650, 30407), (845, 23390), (1690, 11695), (2339, 8450), (4225, 4678)]