20229921

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 29906240

約数和(自身を除く): 9676319

約数列:

[1, 3, 9, 103, 139, 157, 309, 417, 471, 927, 1251, 1413, 14317, 16171, 21823, 42951, 48513, 65469, 128853, 145539, 196407, 2247769, 6743307, 20229921]

約数ペア:

[(1, 20229921), (3, 6743307), (9, 2247769), (103, 196407), (139, 145539), (157, 128853), (309, 65469), (417, 48513), (471, 42951), (927, 21823), (1251, 16171), (1413, 14317)]