28222180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1013}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 68140800

約数和(自身を除く): 39918620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1013, 1393, 1990, 2026, 2786, 3980, 4052, 5065, 5572, 6965, 7091, 10130, 13930, 14182, 20260, 27860, 28364, 35455, 70910, 141820, 201587, 403174, 806348, 1007935, 1411109, 2015870, 2822218, 4031740, 5644436, 7055545, 14111090, 28222180]

約数ペア:

[(1, 28222180), (2, 14111090), (4, 7055545), (5, 5644436), (7, 4031740), (10, 2822218), (14, 2015870), (20, 1411109), (28, 1007935), (35, 806348), (70, 403174), (140, 201587), (199, 141820), (398, 70910), (796, 35455), (995, 28364), (1013, 27860), (1393, 20260), (1990, 14182), (2026, 13930), (2786, 10130), (3980, 7091), (4052, 6965), (5065, 5572)]