18558040

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4783}}^1$

素因数の和:4891

約数の個数: 32

約数和(自身を含む): 42194880

約数和(自身を除く): 23636840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4783, 9566, 19132, 23915, 38264, 47830, 95660, 191320, 463951, 927902, 1855804, 2319755, 3711608, 4639510, 9279020, 18558040]

約数ペア:

[(1, 18558040), (2, 9279020), (4, 4639510), (5, 3711608), (8, 2319755), (10, 1855804), (20, 927902), (40, 463951), (97, 191320), (194, 95660), (388, 47830), (485, 38264), (776, 23915), (970, 19132), (1940, 9566), (3880, 4783)]