18220960

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2423}}^1$

素因数の和:2485

約数の個数: 48

約数和(自身を含む): 43981056

約数和(自身を除く): 25760096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2423, 3760, 4846, 7520, 9692, 12115, 19384, 24230, 38768, 48460, 77536, 96920, 113881, 193840, 227762, 387680, 455524, 569405, 911048, 1138810, 1822096, 2277620, 3644192, 4555240, 9110480, 18220960]

約数ペア:

[(1, 18220960), (2, 9110480), (4, 4555240), (5, 3644192), (8, 2277620), (10, 1822096), (16, 1138810), (20, 911048), (32, 569405), (40, 455524), (47, 387680), (80, 227762), (94, 193840), (160, 113881), (188, 96920), (235, 77536), (376, 48460), (470, 38768), (752, 24230), (940, 19384), (1504, 12115), (1880, 9692), (2423, 7520), (3760, 4846)]