21084345

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7681}}^1$

素因数の和:7753

約数の個数: 24

約数和(自身を含む): 37150152

約数和(自身を除く): 16065807

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7681, 23043, 38405, 69129, 115215, 345645, 468541, 1405623, 2342705, 4216869, 7028115, 21084345]

約数ペア:

[(1, 21084345), (3, 7028115), (5, 4216869), (9, 2342705), (15, 1405623), (45, 468541), (61, 345645), (183, 115215), (305, 69129), (549, 38405), (915, 23043), (2745, 7681)]