20101025

素因数分解:

$5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:354

約数の個数: 36

約数和(自身を含む): 29579580

約数和(自身を除く): 9478555

約数列:

[1, 5, 7, 25, 35, 49, 61, 175, 245, 269, 305, 427, 1225, 1345, 1525, 1883, 2135, 2989, 6725, 9415, 10675, 13181, 14945, 16409, 47075, 65905, 74725, 82045, 114863, 329525, 410225, 574315, 804041, 2871575, 4020205, 20101025]

約数ペア:

[(1, 20101025), (5, 4020205), (7, 2871575), (25, 804041), (35, 574315), (49, 410225), (61, 329525), (175, 114863), (245, 82045), (269, 74725), (305, 65905), (427, 47075), (1225, 16409), (1345, 14945), (1525, 13181), (1883, 10675), (2135, 9415), (2989, 6725)]