21719445

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{947}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 38223360

約数和(自身を除く): 16503915

約数列:

[1, 3, 5, 11, 15, 33, 55, 139, 165, 417, 695, 947, 1529, 2085, 2841, 4587, 4735, 7645, 10417, 14205, 22935, 31251, 52085, 131633, 156255, 394899, 658165, 1447963, 1974495, 4343889, 7239815, 21719445]

約数ペア:

[(1, 21719445), (3, 7239815), (5, 4343889), (11, 1974495), (15, 1447963), (33, 658165), (55, 394899), (139, 156255), (165, 131633), (417, 52085), (695, 31251), (947, 22935), (1529, 14205), (2085, 10417), (2841, 7645), (4587, 4735)]