21512183

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{569}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 26922240

約数和(自身を除く): 5410057

約数列:

[1, 7, 11, 77, 491, 569, 3437, 3983, 5401, 6259, 37807, 43813, 279379, 1955653, 3073169, 21512183]

約数ペア:

[(1, 21512183), (7, 3073169), (11, 1955653), (77, 279379), (491, 43813), (569, 37807), (3437, 6259), (3983, 5401)]