31507540

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 67914000

約数和(自身を除く): 36406460

約数列:

[1, 2, 4, 5, 10, 20, 97, 109, 149, 194, 218, 298, 388, 436, 485, 545, 596, 745, 970, 1090, 1490, 1940, 2180, 2980, 10573, 14453, 16241, 21146, 28906, 32482, 42292, 52865, 57812, 64964, 72265, 81205, 105730, 144530, 162410, 211460, 289060, 324820, 1575377, 3150754, 6301508, 7876885, 15753770, 31507540]

約数ペア:

[(1, 31507540), (2, 15753770), (4, 7876885), (5, 6301508), (10, 3150754), (20, 1575377), (97, 324820), (109, 289060), (149, 211460), (194, 162410), (218, 144530), (298, 105730), (388, 81205), (436, 72265), (485, 64964), (545, 57812), (596, 52865), (745, 42292), (970, 32482), (1090, 28906), (1490, 21146), (1940, 16241), (2180, 14453), (2980, 10573)]