21640716

素因数分解:

$2^2\times 3^3\times {\mathrm{151}}^1\times {\mathrm{1327}}^1$

素因数の和:1491

約数の個数: 48

約数和(自身を含む): 56519680

約数和(自身を除く): 34878964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 151, 302, 453, 604, 906, 1327, 1359, 1812, 2654, 2718, 3981, 4077, 5308, 5436, 7962, 8154, 11943, 15924, 16308, 23886, 35829, 47772, 71658, 143316, 200377, 400754, 601131, 801508, 1202262, 1803393, 2404524, 3606786, 5410179, 7213572, 10820358, 21640716]

約数ペア:

[(1, 21640716), (2, 10820358), (3, 7213572), (4, 5410179), (6, 3606786), (9, 2404524), (12, 1803393), (18, 1202262), (27, 801508), (36, 601131), (54, 400754), (108, 200377), (151, 143316), (302, 71658), (453, 47772), (604, 35829), (906, 23886), (1327, 16308), (1359, 15924), (1812, 11943), (2654, 8154), (2718, 7962), (3981, 5436), (4077, 5308)]