81986900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43151}}^1$

素因数の和:43184

約数の個数: 36

約数和(自身を含む): 187279680

約数和(自身を除く): 105292780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 43151, 86302, 172604, 215755, 431510, 819869, 863020, 1078775, 1639738, 2157550, 3279476, 4099345, 4315100, 8198690, 16397380, 20496725, 40993450, 81986900]

約数ペア:

[(1, 81986900), (2, 40993450), (4, 20496725), (5, 16397380), (10, 8198690), (19, 4315100), (20, 4099345), (25, 3279476), (38, 2157550), (50, 1639738), (76, 1078775), (95, 863020), (100, 819869), (190, 431510), (380, 215755), (475, 172604), (950, 86302), (1900, 43151)]