21553065

素因数分解:

$3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1447}}^1$

素因数の和:1789

約数の個数: 24

約数和(自身を含む): 37497408

約数和(自身を除く): 15944343

約数列:

[1, 3, 5, 9, 15, 45, 331, 993, 1447, 1655, 2979, 4341, 4965, 7235, 13023, 14895, 21705, 65115, 478957, 1436871, 2394785, 4310613, 7184355, 21553065]

約数ペア:

[(1, 21553065), (3, 7184355), (5, 4310613), (9, 2394785), (15, 1436871), (45, 478957), (331, 65115), (993, 21705), (1447, 14895), (1655, 13023), (2979, 7235), (4341, 4965)]