81265630

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 148881600

約数和(自身を除く): 67615970

約数列:

[1, 2, 5, 10, 97, 194, 199, 398, 421, 485, 842, 970, 995, 1990, 2105, 4210, 19303, 38606, 40837, 81674, 83779, 96515, 167558, 193030, 204185, 408370, 418895, 837790, 8126563, 16253126, 40632815, 81265630]

約数ペア:

[(1, 81265630), (2, 40632815), (5, 16253126), (10, 8126563), (97, 837790), (194, 418895), (199, 408370), (398, 204185), (421, 193030), (485, 167558), (842, 96515), (970, 83779), (995, 81674), (1990, 40837), (2105, 38606), (4210, 19303)]