81547380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1009}}^1$

素因数の和:1473

約数の個数: 72

約数和(自身を含む): 248157000

約数和(自身を除く): 166609620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 449, 898, 1009, 1347, 1796, 2018, 2245, 2694, 3027, 4036, 4041, 4490, 5045, 5388, 6054, 6735, 8082, 8980, 9081, 10090, 12108, 13470, 15135, 16164, 18162, 20180, 20205, 26940, 30270, 36324, 40410, 45405, 60540, 80820, 90810, 181620, 453041, 906082, 1359123, 1812164, 2265205, 2718246, 4077369, 4530410, 5436492, 6795615, 8154738, 9060820, 13591230, 16309476, 20386845, 27182460, 40773690, 81547380]

約数ペア:

[(1, 81547380), (2, 40773690), (3, 27182460), (4, 20386845), (5, 16309476), (6, 13591230), (9, 9060820), (10, 8154738), (12, 6795615), (15, 5436492), (18, 4530410), (20, 4077369), (30, 2718246), (36, 2265205), (45, 1812164), (60, 1359123), (90, 906082), (180, 453041), (449, 181620), (898, 90810), (1009, 80820), (1347, 60540), (1796, 45405), (2018, 40410), (2245, 36324), (2694, 30270), (3027, 26940), (4036, 20205), (4041, 20180), (4490, 18162), (5045, 16164), (5388, 15135), (6054, 13470), (6735, 12108), (8082, 10090), (8980, 9081)]