21291110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 39889152

約数和(自身を除く): 18598042

約数列:

[1, 2, 5, 10, 31, 62, 155, 173, 310, 346, 397, 794, 865, 1730, 1985, 3970, 5363, 10726, 12307, 24614, 26815, 53630, 61535, 68681, 123070, 137362, 343405, 686810, 2129111, 4258222, 10645555, 21291110]

約数ペア:

[(1, 21291110), (2, 10645555), (5, 4258222), (10, 2129111), (31, 686810), (62, 343405), (155, 137362), (173, 123070), (310, 68681), (346, 61535), (397, 53630), (794, 26815), (865, 24614), (1730, 12307), (1985, 10726), (3970, 5363)]