20778186

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 49746816

約数和(自身を除く): 28968630

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 61, 66, 78, 122, 143, 183, 286, 366, 397, 429, 671, 793, 794, 858, 1191, 1342, 1586, 2013, 2379, 2382, 4026, 4367, 4758, 5161, 8723, 8734, 10322, 13101, 15483, 17446, 24217, 26169, 26202, 30966, 48434, 52338, 56771, 72651, 113542, 145302, 170313, 266387, 314821, 340626, 532774, 629642, 799161, 944463, 1598322, 1888926, 3463031, 6926062, 10389093, 20778186]

約数ペア:

[(1, 20778186), (2, 10389093), (3, 6926062), (6, 3463031), (11, 1888926), (13, 1598322), (22, 944463), (26, 799161), (33, 629642), (39, 532774), (61, 340626), (66, 314821), (78, 266387), (122, 170313), (143, 145302), (183, 113542), (286, 72651), (366, 56771), (397, 52338), (429, 48434), (671, 30966), (793, 26202), (794, 26169), (858, 24217), (1191, 17446), (1342, 15483), (1586, 13101), (2013, 10322), (2379, 8734), (2382, 8723), (4026, 5161), (4367, 4758)]