21401920

素因数分解:

$2^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1423}}^1$

素因数の和:1487

約数の個数: 56

約数和(自身を含む): 52084224

約数和(自身を除く): 30682304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 160, 188, 235, 320, 376, 470, 752, 940, 1423, 1504, 1880, 2846, 3008, 3760, 5692, 7115, 7520, 11384, 14230, 15040, 22768, 28460, 45536, 56920, 66881, 91072, 113840, 133762, 227680, 267524, 334405, 455360, 535048, 668810, 1070096, 1337620, 2140192, 2675240, 4280384, 5350480, 10700960, 21401920]

約数ペア:

[(1, 21401920), (2, 10700960), (4, 5350480), (5, 4280384), (8, 2675240), (10, 2140192), (16, 1337620), (20, 1070096), (32, 668810), (40, 535048), (47, 455360), (64, 334405), (80, 267524), (94, 227680), (160, 133762), (188, 113840), (235, 91072), (320, 66881), (376, 56920), (470, 45536), (752, 28460), (940, 22768), (1423, 15040), (1504, 14230), (1880, 11384), (2846, 7520), (3008, 7115), (3760, 5692)]