19901580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331693}}^1$

素因数の和:331705

約数の個数: 24

約数和(自身を含む): 55724592

約数和(自身を除く): 35823012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331693, 663386, 995079, 1326772, 1658465, 1990158, 3316930, 3980316, 4975395, 6633860, 9950790, 19901580]

約数ペア:

[(1, 19901580), (2, 9950790), (3, 6633860), (4, 4975395), (5, 3980316), (6, 3316930), (10, 1990158), (12, 1658465), (15, 1326772), (20, 995079), (30, 663386), (60, 331693)]