21815613

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 32497920

約数和(自身を除く): 10682307

約数列:

[1, 3, 9, 61, 79, 183, 237, 503, 549, 711, 1509, 4527, 4819, 14457, 30683, 39737, 43371, 92049, 119211, 276147, 357633, 2423957, 7271871, 21815613]

約数ペア:

[(1, 21815613), (3, 7271871), (9, 2423957), (61, 357633), (79, 276147), (183, 119211), (237, 92049), (503, 43371), (549, 39737), (711, 30683), (1509, 14457), (4527, 4819)]