21315684

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1277}}^1$

素因数の和:1404

約数の個数: 48

約数和(自身を含む): 54105408

約数和(自身を除く): 32789724

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 107, 156, 214, 321, 428, 642, 1277, 1284, 1391, 2554, 2782, 3831, 4173, 5108, 5564, 7662, 8346, 15324, 16601, 16692, 33202, 49803, 66404, 99606, 136639, 199212, 273278, 409917, 546556, 819834, 1639668, 1776307, 3552614, 5328921, 7105228, 10657842, 21315684]

約数ペア:

[(1, 21315684), (2, 10657842), (3, 7105228), (4, 5328921), (6, 3552614), (12, 1776307), (13, 1639668), (26, 819834), (39, 546556), (52, 409917), (78, 273278), (107, 199212), (156, 136639), (214, 99606), (321, 66404), (428, 49803), (642, 33202), (1277, 16692), (1284, 16601), (1391, 15324), (2554, 8346), (2782, 7662), (3831, 5564), (4173, 5108)]