204664940

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 436719360

約数和(自身を除く): 232054420

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 223, 421, 436, 446, 545, 842, 892, 1090, 1115, 1684, 2105, 2180, 2230, 4210, 4460, 8420, 24307, 45889, 48614, 91778, 93883, 97228, 121535, 183556, 187766, 229445, 243070, 375532, 458890, 469415, 486140, 917780, 938830, 1877660, 10233247, 20466494, 40932988, 51166235, 102332470, 204664940]

約数ペア:

[(1, 204664940), (2, 102332470), (4, 51166235), (5, 40932988), (10, 20466494), (20, 10233247), (109, 1877660), (218, 938830), (223, 917780), (421, 486140), (436, 469415), (446, 458890), (545, 375532), (842, 243070), (892, 229445), (1090, 187766), (1115, 183556), (1684, 121535), (2105, 97228), (2180, 93883), (2230, 91778), (4210, 48614), (4460, 45889), (8420, 24307)]