21570945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{547}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 37877760

約数和(自身を除く): 16306815

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 239, 547, 717, 1195, 1641, 2629, 2735, 3585, 6017, 7887, 8205, 13145, 18051, 30085, 39435, 90255, 130733, 392199, 653665, 1438063, 1960995, 4314189, 7190315, 21570945]

約数ペア:

[(1, 21570945), (3, 7190315), (5, 4314189), (11, 1960995), (15, 1438063), (33, 653665), (55, 392199), (165, 130733), (239, 90255), (547, 39435), (717, 30085), (1195, 18051), (1641, 13145), (2629, 8205), (2735, 7887), (3585, 6017)]