205678431

素因数分解:

$3^2\times 7^2\times {\mathrm{271}}^1\times {\mathrm{1721}}^1$

素因数の和:2012

約数の個数: 36

約数和(自身を含む): 347072544

約数和(自身を除く): 141394113

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 271, 441, 813, 1721, 1897, 2439, 5163, 5691, 12047, 13279, 15489, 17073, 36141, 39837, 84329, 108423, 119511, 252987, 466391, 758961, 1399173, 3264737, 4197519, 9794211, 22853159, 29382633, 68559477, 205678431]

約数ペア:

[(1, 205678431), (3, 68559477), (7, 29382633), (9, 22853159), (21, 9794211), (49, 4197519), (63, 3264737), (147, 1399173), (271, 758961), (441, 466391), (813, 252987), (1721, 119511), (1897, 108423), (2439, 84329), (5163, 39837), (5691, 36141), (12047, 17073), (13279, 15489)]