7761640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3181}}^1$

素因数の和:3253

約数の個数: 32

約数和(自身を含む): 17755560

約数和(自身を除く): 9993920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 3181, 6362, 12724, 15905, 25448, 31810, 63620, 127240, 194041, 388082, 776164, 970205, 1552328, 1940410, 3880820, 7761640]

約数ペア:

[(1, 7761640), (2, 3880820), (4, 1940410), (5, 1552328), (8, 970205), (10, 776164), (20, 388082), (40, 194041), (61, 127240), (122, 63620), (244, 31810), (305, 25448), (488, 15905), (610, 12724), (1220, 6362), (2440, 3181)]