30865960

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3917}}^1$

素因数の和:4125

約数の個数: 32

約数和(自身を含む): 69818760

約数和(自身を除く): 38952800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3917, 3940, 7834, 7880, 15668, 19585, 31336, 39170, 78340, 156680, 771649, 1543298, 3086596, 3858245, 6173192, 7716490, 15432980, 30865960]

約数ペア:

[(1, 30865960), (2, 15432980), (4, 7716490), (5, 6173192), (8, 3858245), (10, 3086596), (20, 1543298), (40, 771649), (197, 156680), (394, 78340), (788, 39170), (985, 31336), (1576, 19585), (1970, 15668), (3917, 7880), (3940, 7834)]