15922220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 35164416

約数和(自身を除く): 19242196

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 421, 610, 620, 842, 1220, 1684, 1891, 2105, 3782, 4210, 7564, 8420, 9455, 13051, 18910, 25681, 26102, 37820, 51362, 52204, 65255, 102724, 128405, 130510, 256810, 261020, 513620, 796111, 1592222, 3184444, 3980555, 7961110, 15922220]

約数ペア:

[(1, 15922220), (2, 7961110), (4, 3980555), (5, 3184444), (10, 1592222), (20, 796111), (31, 513620), (61, 261020), (62, 256810), (122, 130510), (124, 128405), (155, 102724), (244, 65255), (305, 52204), (310, 51362), (421, 37820), (610, 26102), (620, 25681), (842, 18910), (1220, 13051), (1684, 9455), (1891, 8420), (2105, 7564), (3782, 4210)]