18780008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{503}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 19322392

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 359, 503, 718, 1006, 1436, 2012, 2872, 4024, 4667, 6539, 9334, 13078, 18668, 26156, 37336, 52312, 180577, 361154, 722308, 1444616, 2347501, 4695002, 9390004, 18780008]

約数ペア:

[(1, 18780008), (2, 9390004), (4, 4695002), (8, 2347501), (13, 1444616), (26, 722308), (52, 361154), (104, 180577), (359, 52312), (503, 37336), (718, 26156), (1006, 18668), (1436, 13078), (2012, 9334), (2872, 6539), (4024, 4667)]