638340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{10639}}^1$

素因数の和:10651

約数の個数: 24

約数和(自身を含む): 1787520

約数和(自身を除く): 1149180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 10639, 21278, 31917, 42556, 53195, 63834, 106390, 127668, 159585, 212780, 319170, 638340]

約数ペア:

[(1, 638340), (2, 319170), (3, 212780), (4, 159585), (5, 127668), (6, 106390), (10, 63834), (12, 53195), (15, 42556), (20, 31917), (30, 21278), (60, 10639)]