1280890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:246

約数の個数: 32

約数和(自身を含む): 2540160

約数和(自身を除く): 1259270

約数列:

[1, 2, 5, 10, 13, 26, 59, 65, 118, 130, 167, 295, 334, 590, 767, 835, 1534, 1670, 2171, 3835, 4342, 7670, 9853, 10855, 19706, 21710, 49265, 98530, 128089, 256178, 640445, 1280890]

約数ペア:

[(1, 1280890), (2, 640445), (5, 256178), (10, 128089), (13, 98530), (26, 49265), (59, 21710), (65, 19706), (118, 10855), (130, 9853), (167, 7670), (295, 4342), (334, 3835), (590, 2171), (767, 1670), (835, 1534)]