18774320

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{709}}^1$

素因数の和:1053

約数の個数: 40

約数和(自身を含む): 43843920

約数和(自身を除く): 25069600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 709, 1324, 1418, 1655, 2648, 2836, 3310, 3545, 5296, 5672, 6620, 7090, 11344, 13240, 14180, 26480, 28360, 56720, 234679, 469358, 938716, 1173395, 1877432, 2346790, 3754864, 4693580, 9387160, 18774320]

約数ペア:

[(1, 18774320), (2, 9387160), (4, 4693580), (5, 3754864), (8, 2346790), (10, 1877432), (16, 1173395), (20, 938716), (40, 469358), (80, 234679), (331, 56720), (662, 28360), (709, 26480), (1324, 14180), (1418, 13240), (1655, 11344), (2648, 7090), (2836, 6620), (3310, 5672), (3545, 5296)]