28489825

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1789}}^1$

素因数の和:1826

約数の個数: 36

約数和(自身を含む): 44281020

約数和(自身を除く): 15791195

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1225, 1789, 2275, 3185, 8945, 12523, 15925, 23257, 44725, 62615, 87661, 116285, 162799, 313075, 438305, 581425, 813995, 1139593, 2191525, 4069975, 5697965, 28489825]

約数ペア:

[(1, 28489825), (5, 5697965), (7, 4069975), (13, 2191525), (25, 1139593), (35, 813995), (49, 581425), (65, 438305), (91, 313075), (175, 162799), (245, 116285), (325, 87661), (455, 62615), (637, 44725), (1225, 23257), (1789, 15925), (2275, 12523), (3185, 8945)]