1781860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{53}}^1$

素因数の和:144

約数の個数: 36

約数和(自身を含む): 3907764

約数和(自身を除く): 2125904

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 82, 106, 164, 205, 212, 265, 410, 530, 820, 1060, 1681, 2173, 3362, 4346, 6724, 8405, 8692, 10865, 16810, 21730, 33620, 43460, 89093, 178186, 356372, 445465, 890930, 1781860]

約数ペア:

[(1, 1781860), (2, 890930), (4, 445465), (5, 356372), (10, 178186), (20, 89093), (41, 43460), (53, 33620), (82, 21730), (106, 16810), (164, 10865), (205, 8692), (212, 8405), (265, 6724), (410, 4346), (530, 3362), (820, 2173), (1060, 1681)]