28809820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110807}}^1$

素因数の和:110829

約数の個数: 24

約数和(自身を含む): 65155104

約数和(自身を除く): 36345284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110807, 221614, 443228, 554035, 1108070, 1440491, 2216140, 2880982, 5761964, 7202455, 14404910, 28809820]

約数ペア:

[(1, 28809820), (2, 14404910), (4, 7202455), (5, 5761964), (10, 2880982), (13, 2216140), (20, 1440491), (26, 1108070), (52, 554035), (65, 443228), (130, 221614), (260, 110807)]