28487823

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 49190400

約数和(自身を除く): 20702577

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 169, 273, 299, 349, 483, 507, 897, 1047, 1183, 2093, 2443, 3549, 3887, 4537, 6279, 7329, 8027, 11661, 13611, 24081, 27209, 31759, 56189, 58981, 81627, 95277, 104351, 168567, 176943, 313053, 412867, 730457, 1238601, 1356563, 2191371, 4069689, 9495941, 28487823]

約数ペア:

[(1, 28487823), (3, 9495941), (7, 4069689), (13, 2191371), (21, 1356563), (23, 1238601), (39, 730457), (69, 412867), (91, 313053), (161, 176943), (169, 168567), (273, 104351), (299, 95277), (349, 81627), (483, 58981), (507, 56189), (897, 31759), (1047, 27209), (1183, 24081), (2093, 13611), (2443, 11661), (3549, 8027), (3887, 7329), (4537, 6279)]