21061160

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2909}}^1$

素因数の和:3101

約数の個数: 32

約数和(自身を含む): 47665800

約数和(自身を除く): 26604640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2909, 3620, 5818, 7240, 11636, 14545, 23272, 29090, 58180, 116360, 526529, 1053058, 2106116, 2632645, 4212232, 5265290, 10530580, 21061160]

約数ペア:

[(1, 21061160), (2, 10530580), (4, 5265290), (5, 4212232), (8, 2632645), (10, 2106116), (20, 1053058), (40, 526529), (181, 116360), (362, 58180), (724, 29090), (905, 23272), (1448, 14545), (1810, 11636), (2909, 7240), (3620, 5818)]