28757170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{221209}}^1$

素因数の和:221229

約数の個数: 16

約数和(自身を含む): 55744920

約数和(自身を除く): 26987750

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 221209, 442418, 1106045, 2212090, 2875717, 5751434, 14378585, 28757170]

約数ペア:

[(1, 28757170), (2, 14378585), (5, 5751434), (10, 2875717), (13, 2212090), (26, 1106045), (65, 442418), (130, 221209)]