221710209

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{8747}}^1$

素因数の和:8845

約数の個数: 32

約数和(自身を含む): 362797056

約数和(自身を除く): 141086847

約数列:

[1, 3, 7, 17, 21, 51, 71, 119, 213, 357, 497, 1207, 1491, 3621, 8449, 8747, 25347, 26241, 61229, 148699, 183687, 446097, 621037, 1040893, 1863111, 3122679, 4347259, 10557629, 13041777, 31672887, 73903403, 221710209]

約数ペア:

[(1, 221710209), (3, 73903403), (7, 31672887), (17, 13041777), (21, 10557629), (51, 4347259), (71, 3122679), (119, 1863111), (213, 1040893), (357, 621037), (497, 446097), (1207, 183687), (1491, 148699), (3621, 61229), (8449, 26241), (8747, 25347)]