31431393

素因数分解:

$3^2\times 7^2\times {\mathrm{263}}^1\times {\mathrm{271}}^1$

素因数の和:554

約数の個数: 36

約数和(自身を含む): 53209728

約数和(自身を除く): 21778335

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 263, 271, 441, 789, 813, 1841, 1897, 2367, 2439, 5523, 5691, 12887, 13279, 16569, 17073, 38661, 39837, 71273, 115983, 119511, 213819, 498911, 641457, 1496733, 3492377, 4490199, 10477131, 31431393]

約数ペア:

[(1, 31431393), (3, 10477131), (7, 4490199), (9, 3492377), (21, 1496733), (49, 641457), (63, 498911), (147, 213819), (263, 119511), (271, 115983), (441, 71273), (789, 39837), (813, 38661), (1841, 17073), (1897, 16569), (2367, 13279), (2439, 12887), (5523, 5691)]