19901380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32099}}^1$

素因数の和:32139

約数の個数: 24

約数和(自身を含む): 43142400

約数和(自身を除く): 23241020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32099, 64198, 128396, 160495, 320990, 641980, 995069, 1990138, 3980276, 4975345, 9950690, 19901380]

約数ペア:

[(1, 19901380), (2, 9950690), (4, 4975345), (5, 3980276), (10, 1990138), (20, 995069), (31, 641980), (62, 320990), (124, 160495), (155, 128396), (310, 64198), (620, 32099)]