40402970

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 74304000

約数和(自身を除く): 33901030

約数列:

[1, 2, 5, 10, 79, 158, 199, 257, 395, 398, 514, 790, 995, 1285, 1990, 2570, 15721, 20303, 31442, 40606, 51143, 78605, 101515, 102286, 157210, 203030, 255715, 511430, 4040297, 8080594, 20201485, 40402970]

約数ペア:

[(1, 40402970), (2, 20201485), (5, 8080594), (10, 4040297), (79, 511430), (158, 255715), (199, 203030), (257, 157210), (395, 102286), (398, 101515), (514, 78605), (790, 51143), (995, 40606), (1285, 31442), (1990, 20303), (2570, 15721)]