20994678

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 47258640

約数和(自身を除く): 26263962

約数列:

[1, 2, 3, 6, 9, 18, 53, 59, 106, 118, 159, 177, 318, 354, 373, 477, 531, 746, 954, 1062, 1119, 2238, 3127, 3357, 6254, 6714, 9381, 18762, 19769, 22007, 28143, 39538, 44014, 56286, 59307, 66021, 118614, 132042, 177921, 198063, 355842, 396126, 1166371, 2332742, 3499113, 6998226, 10497339, 20994678]

約数ペア:

[(1, 20994678), (2, 10497339), (3, 6998226), (6, 3499113), (9, 2332742), (18, 1166371), (53, 396126), (59, 355842), (106, 198063), (118, 177921), (159, 132042), (177, 118614), (318, 66021), (354, 59307), (373, 56286), (477, 44014), (531, 39538), (746, 28143), (954, 22007), (1062, 19769), (1119, 18762), (2238, 9381), (3127, 6714), (3357, 6254)]