20178804867

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{647}}^1\times {\mathrm{2887}}^1$

素因数の和:3827

約数の個数: 32

約数和(自身を含む): 29134328832

約数和(自身を除く): 8955523965

約数列:

[1, 3, 13, 39, 277, 647, 831, 1941, 2887, 3601, 8411, 8661, 10803, 25233, 37531, 112593, 179219, 537657, 799699, 1867889, 2329847, 2399097, 5603667, 6989541, 10396087, 24282557, 31188261, 72847671, 517405253, 1552215759, 6726268289, 20178804867]

約数ペア:

[(1, 20178804867), (3, 6726268289), (13, 1552215759), (39, 517405253), (277, 72847671), (647, 31188261), (831, 24282557), (1941, 10396087), (2887, 6989541), (3601, 5603667), (8411, 2399097), (8661, 2329847), (10803, 1867889), (25233, 799699), (37531, 537657), (112593, 179219)]