21166180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4877}}^1$

素因数の和:4924

約数の個数: 48

約数和(自身を含む): 52448256

約数和(自身を除く): 31282076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4877, 9754, 19508, 24385, 34139, 48770, 68278, 97540, 136556, 151187, 170695, 302374, 341390, 604748, 682780, 755935, 1058309, 1511870, 2116618, 3023740, 4233236, 5291545, 10583090, 21166180]

約数ペア:

[(1, 21166180), (2, 10583090), (4, 5291545), (5, 4233236), (7, 3023740), (10, 2116618), (14, 1511870), (20, 1058309), (28, 755935), (31, 682780), (35, 604748), (62, 341390), (70, 302374), (124, 170695), (140, 151187), (155, 136556), (217, 97540), (310, 68278), (434, 48770), (620, 34139), (868, 24385), (1085, 19508), (2170, 9754), (4340, 4877)]