21321190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{811}}^1$

素因数の和:1068

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 20772890

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 239, 478, 811, 1195, 1622, 2390, 2629, 4055, 5258, 8110, 8921, 13145, 17842, 26290, 44605, 89210, 193829, 387658, 969145, 1938290, 2132119, 4264238, 10660595, 21321190]

約数ペア:

[(1, 21321190), (2, 10660595), (5, 4264238), (10, 2132119), (11, 1938290), (22, 969145), (55, 387658), (110, 193829), (239, 89210), (478, 44605), (811, 26290), (1195, 17842), (1622, 13145), (2390, 8921), (2629, 8110), (4055, 5258)]