208408025

素因数分解:

$5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2789}}^1$

素因数の和:2874

約数の個数: 36

約数和(自身を含む): 305655660

約数和(自身を除く): 97247635

約数列:

[1, 5, 7, 25, 35, 49, 61, 175, 245, 305, 427, 1225, 1525, 2135, 2789, 2989, 10675, 13945, 14945, 19523, 69725, 74725, 97615, 136661, 170129, 488075, 683305, 850645, 1190903, 3416525, 4253225, 5954515, 8336321, 29772575, 41681605, 208408025]

約数ペア:

[(1, 208408025), (5, 41681605), (7, 29772575), (25, 8336321), (35, 5954515), (49, 4253225), (61, 3416525), (175, 1190903), (245, 850645), (305, 683305), (427, 488075), (1225, 170129), (1525, 136661), (2135, 97615), (2789, 74725), (2989, 69725), (10675, 19523), (13945, 14945)]