20027917

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1367}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 26199936

約数和(自身を除く): 6172019

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1367, 2093, 9569, 14651, 17771, 31441, 66983, 124397, 220087, 408733, 870779, 1540609, 2861131, 20027917]

約数ペア:

[(1, 20027917), (7, 2861131), (13, 1540609), (23, 870779), (49, 408733), (91, 220087), (161, 124397), (299, 66983), (637, 31441), (1127, 17771), (1367, 14651), (2093, 9569)]