21131526

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{11779}}^1$

素因数の和:11820

約数の個数: 32

約数和(自身を含む): 47496960

約数和(自身を除く): 26365434

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 138, 299, 598, 897, 1794, 11779, 23558, 35337, 70674, 153127, 270917, 306254, 459381, 541834, 812751, 918762, 1625502, 3521921, 7043842, 10565763, 21131526]

約数ペア:

[(1, 21131526), (2, 10565763), (3, 7043842), (6, 3521921), (13, 1625502), (23, 918762), (26, 812751), (39, 541834), (46, 459381), (69, 306254), (78, 270917), (138, 153127), (299, 70674), (598, 35337), (897, 23558), (1794, 11779)]