21221253

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2617}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 33081048

約数和(自身を除く): 11859795

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2617, 2703, 7851, 8109, 23553, 44489, 133467, 138701, 400401, 416103, 1248309, 2357917, 7073751, 21221253]

約数ペア:

[(1, 21221253), (3, 7073751), (9, 2357917), (17, 1248309), (51, 416103), (53, 400401), (153, 138701), (159, 133467), (477, 44489), (901, 23553), (2617, 8109), (2703, 7851)]