21173930

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{409}}^1$

素因数の和:614

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18500950

約数列:

[1, 2, 5, 10, 31, 62, 155, 167, 310, 334, 409, 818, 835, 1670, 2045, 4090, 5177, 10354, 12679, 25358, 25885, 51770, 63395, 68303, 126790, 136606, 341515, 683030, 2117393, 4234786, 10586965, 21173930]

約数ペア:

[(1, 21173930), (2, 10586965), (5, 4234786), (10, 2117393), (31, 683030), (62, 341515), (155, 136606), (167, 126790), (310, 68303), (334, 63395), (409, 51770), (818, 25885), (835, 25358), (1670, 12679), (2045, 10354), (4090, 5177)]