19957965

素因数分解:

$3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{7351}}^1$

素因数の和:7540

約数の個数: 16

約数和(自身を含む): 32113536

約数和(自身を除く): 12155571

約数列:

[1, 3, 5, 15, 181, 543, 905, 2715, 7351, 22053, 36755, 110265, 1330531, 3991593, 6652655, 19957965]

約数ペア:

[(1, 19957965), (3, 6652655), (5, 3991593), (15, 1330531), (181, 110265), (543, 36755), (905, 22053), (2715, 7351)]