18868900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{9931}}^1$

素因数の和:9964

約数の個数: 36

約数和(自身を含む): 43104880

約数和(自身を除く): 24235980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 9931, 19862, 39724, 49655, 99310, 188689, 198620, 248275, 377378, 496550, 754756, 943445, 993100, 1886890, 3773780, 4717225, 9434450, 18868900]

約数ペア:

[(1, 18868900), (2, 9434450), (4, 4717225), (5, 3773780), (10, 1886890), (19, 993100), (20, 943445), (25, 754756), (38, 496550), (50, 377378), (76, 248275), (95, 198620), (100, 188689), (190, 99310), (380, 49655), (475, 39724), (950, 19862), (1900, 9931)]