21080075

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{601}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 27769056

約数和(自身を除く): 6688981

約数列:

[1, 5, 23, 25, 61, 115, 305, 575, 601, 1403, 1525, 3005, 7015, 13823, 15025, 35075, 36661, 69115, 183305, 345575, 843203, 916525, 4216015, 21080075]

約数ペア:

[(1, 21080075), (5, 4216015), (23, 916525), (25, 843203), (61, 345575), (115, 183305), (305, 69115), (575, 36661), (601, 35075), (1403, 15025), (1525, 13823), (3005, 7015)]