21491208

素因数分解:

$2^3\times 3^2\times {\mathrm{421}}^1\times {\mathrm{709}}^1$

素因数の和:1142

約数の個数: 48

約数和(自身を含む): 58425900

約数和(自身を除く): 36934692

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 421, 709, 842, 1263, 1418, 1684, 2127, 2526, 2836, 3368, 3789, 4254, 5052, 5672, 6381, 7578, 8508, 10104, 12762, 15156, 17016, 25524, 30312, 51048, 298489, 596978, 895467, 1193956, 1790934, 2387912, 2686401, 3581868, 5372802, 7163736, 10745604, 21491208]

約数ペア:

[(1, 21491208), (2, 10745604), (3, 7163736), (4, 5372802), (6, 3581868), (8, 2686401), (9, 2387912), (12, 1790934), (18, 1193956), (24, 895467), (36, 596978), (72, 298489), (421, 51048), (709, 30312), (842, 25524), (1263, 17016), (1418, 15156), (1684, 12762), (2127, 10104), (2526, 8508), (2836, 7578), (3368, 6381), (3789, 5672), (4254, 5052)]