21916405

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{32957}}^1$

素因数の和:32988

約数の個数: 16

約数和(自身を含む): 31639680

約数和(自身を除く): 9723275

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 32957, 164785, 230699, 626183, 1153495, 3130915, 4383281, 21916405]

約数ペア:

[(1, 21916405), (5, 4383281), (7, 3130915), (19, 1153495), (35, 626183), (95, 230699), (133, 164785), (665, 32957)]