251210310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{644129}}^1$

素因数の和:644152

約数の個数: 32

約数和(自身を含む): 649283040

約数和(自身を除く): 398072730

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 644129, 1288258, 1932387, 3220645, 3864774, 6441290, 8373677, 9661935, 16747354, 19323870, 25121031, 41868385, 50242062, 83736770, 125605155, 251210310]

約数ペア:

[(1, 251210310), (2, 125605155), (3, 83736770), (5, 50242062), (6, 41868385), (10, 25121031), (13, 19323870), (15, 16747354), (26, 9661935), (30, 8373677), (39, 6441290), (65, 3864774), (78, 3220645), (130, 1932387), (195, 1288258), (390, 644129)]