21552205940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{581549}}^1$

素因数の和:581684

約数の個数: 48

約数和(自身を含む): 48361698000

約数和(自身を除く): 26809492060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 545, 1090, 1853, 2180, 3706, 7412, 9265, 18530, 37060, 581549, 1163098, 2326196, 2907745, 5815490, 9886333, 11630980, 19772666, 39545332, 49431665, 63388841, 98863330, 126777682, 197726660, 253555364, 316944205, 633888410, 1077610297, 1267776820, 2155220594, 4310441188, 5388051485, 10776102970, 21552205940]

約数ペア:

[(1, 21552205940), (2, 10776102970), (4, 5388051485), (5, 4310441188), (10, 2155220594), (17, 1267776820), (20, 1077610297), (34, 633888410), (68, 316944205), (85, 253555364), (109, 197726660), (170, 126777682), (218, 98863330), (340, 63388841), (436, 49431665), (545, 39545332), (1090, 19772666), (1853, 11630980), (2180, 9886333), (3706, 5815490), (7412, 2907745), (9265, 2326196), (18530, 1163098), (37060, 581549)]