251453670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{644753}}^1$

素因数の和:644776

約数の個数: 32

約数和(自身を含む): 649912032

約数和(自身を除く): 398458362

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 644753, 1289506, 1934259, 3223765, 3868518, 6447530, 8381789, 9671295, 16763578, 19342590, 25145367, 41908945, 50290734, 83817890, 125726835, 251453670]

約数ペア:

[(1, 251453670), (2, 125726835), (3, 83817890), (5, 50290734), (6, 41908945), (10, 25145367), (13, 19342590), (15, 16763578), (26, 9671295), (30, 8381789), (39, 6447530), (65, 3868518), (78, 3223765), (130, 1934259), (195, 1289506), (390, 644753)]