21213159

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{79}}^2\times {\mathrm{103}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 31554432

約数和(自身を除く): 10341273

約数列:

[1, 3, 11, 33, 79, 103, 237, 309, 869, 1133, 2607, 3399, 6241, 8137, 18723, 24411, 68651, 89507, 205953, 268521, 642823, 1928469, 7071053, 21213159]

約数ペア:

[(1, 21213159), (3, 7071053), (11, 1928469), (33, 642823), (79, 268521), (103, 205953), (237, 89507), (309, 68651), (869, 24411), (1133, 18723), (2607, 8137), (3399, 6241)]