209220309

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{25801}}^1$

素因数の和:25877

約数の個数: 24

約数和(自身を含む): 326034072

約数和(自身を除く): 116813763

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2703, 8109, 25801, 77403, 232209, 438617, 1315851, 1367453, 3947553, 4102359, 12307077, 23246701, 69740103, 209220309]

約数ペア:

[(1, 209220309), (3, 69740103), (9, 23246701), (17, 12307077), (51, 4102359), (53, 3947553), (153, 1367453), (159, 1315851), (477, 438617), (901, 232209), (2703, 77403), (8109, 25801)]