28820519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 37470720

約数和(自身を除く): 8650201

約数列:

[1, 7, 13, 29, 67, 91, 163, 203, 377, 469, 871, 1141, 1943, 2119, 2639, 4727, 6097, 10921, 13601, 14833, 25259, 33089, 61451, 76447, 141973, 176813, 316709, 430157, 993811, 2216963, 4117217, 28820519]

約数ペア:

[(1, 28820519), (7, 4117217), (13, 2216963), (29, 993811), (67, 430157), (91, 316709), (163, 176813), (203, 141973), (377, 76447), (469, 61451), (871, 33089), (1141, 25259), (1943, 14833), (2119, 13601), (2639, 10921), (4727, 6097)]