20158700

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1013}}^1$

素因数の和:1226

約数の個数: 36

約数和(自身を含む): 44007600

約数和(自身を除く): 23848900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1013, 1990, 2026, 3980, 4052, 4975, 5065, 9950, 10130, 19900, 20260, 25325, 50650, 101300, 201587, 403174, 806348, 1007935, 2015870, 4031740, 5039675, 10079350, 20158700]

約数ペア:

[(1, 20158700), (2, 10079350), (4, 5039675), (5, 4031740), (10, 2015870), (20, 1007935), (25, 806348), (50, 403174), (100, 201587), (199, 101300), (398, 50650), (796, 25325), (995, 20260), (1013, 19900), (1990, 10130), (2026, 9950), (3980, 5065), (4052, 4975)]