81068540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82723}}^1$

素因数の和:82746

約数の個数: 36

約数和(自身を含む): 198041256

約数和(自身を除く): 116972716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82723, 165446, 330892, 413615, 579061, 827230, 1158122, 1654460, 2316244, 2895305, 4053427, 5790610, 8106854, 11581220, 16213708, 20267135, 40534270, 81068540]

約数ペア:

[(1, 81068540), (2, 40534270), (4, 20267135), (5, 16213708), (7, 11581220), (10, 8106854), (14, 5790610), (20, 4053427), (28, 2895305), (35, 2316244), (49, 1654460), (70, 1158122), (98, 827230), (140, 579061), (196, 413615), (245, 330892), (490, 165446), (980, 82723)]