18377960

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4549}}^1$

素因数の和:4661

約数の個数: 32

約数和(自身を含む): 41769000

約数和(自身を除く): 23391040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4549, 9098, 18196, 22745, 36392, 45490, 90980, 181960, 459449, 918898, 1837796, 2297245, 3675592, 4594490, 9188980, 18377960]

約数ペア:

[(1, 18377960), (2, 9188980), (4, 4594490), (5, 3675592), (8, 2297245), (10, 1837796), (20, 918898), (40, 459449), (101, 181960), (202, 90980), (404, 45490), (505, 36392), (808, 22745), (1010, 18196), (2020, 9098), (4040, 4549)]