20212407

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9664713

約数列:

[1, 3, 9, 107, 139, 151, 321, 417, 453, 963, 1251, 1359, 14873, 16157, 20989, 44619, 48471, 62967, 133857, 145413, 188901, 2245823, 6737469, 20212407]

約数ペア:

[(1, 20212407), (3, 6737469), (9, 2245823), (107, 188901), (139, 145413), (151, 133857), (321, 62967), (417, 48471), (453, 44619), (963, 20989), (1251, 16157), (1359, 14873)]