25507209

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{401}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 42142464

約数和(自身を除く): 16635255

約数列:

[1, 3, 7, 13, 21, 39, 91, 233, 273, 401, 699, 1203, 1631, 2807, 3029, 4893, 5213, 8421, 9087, 15639, 21203, 36491, 63609, 93433, 109473, 280299, 654031, 1214629, 1962093, 3643887, 8502403, 25507209]

約数ペア:

[(1, 25507209), (3, 8502403), (7, 3643887), (13, 1962093), (21, 1214629), (39, 654031), (91, 280299), (233, 109473), (273, 93433), (401, 63609), (699, 36491), (1203, 21203), (1631, 15639), (2807, 9087), (3029, 8421), (4893, 5213)]