157521231

素因数分解:

$3^2\times 7^2\times {\mathrm{547}}^1\times {\mathrm{653}}^1$

素因数の和:1220

約数の個数: 36

約数和(自身を含む): 265568472

約数和(自身を除く): 108047241

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 547, 653, 1641, 1959, 3829, 4571, 4923, 5877, 11487, 13713, 26803, 31997, 34461, 41139, 80409, 95991, 241227, 287973, 357191, 1071573, 2500337, 3214719, 7501011, 17502359, 22503033, 52507077, 157521231]

約数ペア:

[(1, 157521231), (3, 52507077), (7, 22503033), (9, 17502359), (21, 7501011), (49, 3214719), (63, 2500337), (147, 1071573), (441, 357191), (547, 287973), (653, 241227), (1641, 95991), (1959, 80409), (3829, 41139), (4571, 34461), (4923, 31997), (5877, 26803), (11487, 13713)]