28790853

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{647}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 47609856

約数和(自身を除く): 18819003

約数列:

[1, 3, 7, 13, 21, 39, 91, 163, 273, 489, 647, 1141, 1941, 2119, 3423, 4529, 6357, 8411, 13587, 14833, 25233, 44499, 58877, 105461, 176631, 316383, 738227, 1370993, 2214681, 4112979, 9596951, 28790853]

約数ペア:

[(1, 28790853), (3, 9596951), (7, 4112979), (13, 2214681), (21, 1370993), (39, 738227), (91, 316383), (163, 176631), (273, 105461), (489, 58877), (647, 44499), (1141, 25233), (1941, 14833), (2119, 13587), (3423, 8411), (4529, 6357)]