21187425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40357}}^1$

素因数の和:40377

約数の個数: 24

約数和(自身を含む): 40035136

約数和(自身を除く): 18847711

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40357, 121071, 201785, 282499, 605355, 847497, 1008925, 1412495, 3026775, 4237485, 7062475, 21187425]

約数ペア:

[(1, 21187425), (3, 7062475), (5, 4237485), (7, 3026775), (15, 1412495), (21, 1008925), (25, 847497), (35, 605355), (75, 282499), (105, 201785), (175, 121071), (525, 40357)]