20829753

素因数分解:

$3^2\times 7^2\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:486

約数の個数: 36

約数和(自身を含む): 35345700

約数和(自身を除く): 14515947

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 149, 317, 441, 447, 951, 1043, 1341, 2219, 2853, 3129, 6657, 7301, 9387, 15533, 19971, 21903, 46599, 47233, 65709, 139797, 141699, 330631, 425097, 991893, 2314417, 2975679, 6943251, 20829753]

約数ペア:

[(1, 20829753), (3, 6943251), (7, 2975679), (9, 2314417), (21, 991893), (49, 425097), (63, 330631), (147, 141699), (149, 139797), (317, 65709), (441, 47233), (447, 46599), (951, 21903), (1043, 19971), (1341, 15533), (2219, 9387), (2853, 7301), (3129, 6657)]