18809680

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1231}}^1$

素因数の和:1435

約数の個数: 40

約数和(自身を含む): 43997184

約数和(自身を除く): 25187504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1231, 1528, 1910, 2462, 3056, 3820, 4924, 6155, 7640, 9848, 12310, 15280, 19696, 24620, 49240, 98480, 235121, 470242, 940484, 1175605, 1880968, 2351210, 3761936, 4702420, 9404840, 18809680]

約数ペア:

[(1, 18809680), (2, 9404840), (4, 4702420), (5, 3761936), (8, 2351210), (10, 1880968), (16, 1175605), (20, 940484), (40, 470242), (80, 235121), (191, 98480), (382, 49240), (764, 24620), (955, 19696), (1231, 15280), (1528, 12310), (1910, 9848), (2462, 7640), (3056, 6155), (3820, 4924)]