20217379

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 26449920

約数和(自身を除く): 6232541

約数列:

[1, 7, 13, 29, 47, 91, 163, 203, 329, 377, 611, 1141, 1363, 2119, 2639, 4277, 4727, 7661, 9541, 14833, 17719, 33089, 53627, 61451, 99593, 124033, 222169, 430157, 697151, 1555183, 2888197, 20217379]

約数ペア:

[(1, 20217379), (7, 2888197), (13, 1555183), (29, 697151), (47, 430157), (91, 222169), (163, 124033), (203, 99593), (329, 61451), (377, 53627), (611, 33089), (1141, 17719), (1363, 14833), (2119, 9541), (2639, 7661), (4277, 4727)]