20994345

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6571}}^1$

素因数の和:6653

約数の個数: 24

約数和(自身を含む): 36908352

約数和(自身を除く): 15914007

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6571, 19713, 32855, 59139, 98565, 295695, 466541, 1399623, 2332705, 4198869, 6998115, 20994345]

約数ペア:

[(1, 20994345), (3, 6998115), (5, 4198869), (9, 2332705), (15, 1399623), (45, 466541), (71, 295695), (213, 98565), (355, 59139), (639, 32855), (1065, 19713), (3195, 6571)]