221640757

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 260467200

約数和(自身を除く): 38826443

約数列:

[1, 13, 19, 59, 67, 227, 247, 767, 871, 1121, 1273, 2951, 3953, 4313, 13393, 14573, 15209, 16549, 51389, 56069, 75107, 174109, 197717, 254467, 288971, 897331, 976391, 3308071, 3756623, 11665303, 17049289, 221640757]

約数ペア:

[(1, 221640757), (13, 17049289), (19, 11665303), (59, 3756623), (67, 3308071), (227, 976391), (247, 897331), (767, 288971), (871, 254467), (1121, 197717), (1273, 174109), (2951, 75107), (3953, 56069), (4313, 51389), (13393, 16549), (14573, 15209)]