20251340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 45208800

約数和(自身を除く): 24957460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 380, 389, 548, 685, 778, 1370, 1556, 1945, 2603, 2740, 3890, 5206, 7391, 7780, 10412, 13015, 14782, 26030, 29564, 36955, 52060, 53293, 73910, 106586, 147820, 213172, 266465, 532930, 1012567, 1065860, 2025134, 4050268, 5062835, 10125670, 20251340]

約数ペア:

[(1, 20251340), (2, 10125670), (4, 5062835), (5, 4050268), (10, 2025134), (19, 1065860), (20, 1012567), (38, 532930), (76, 266465), (95, 213172), (137, 147820), (190, 106586), (274, 73910), (380, 53293), (389, 52060), (548, 36955), (685, 29564), (778, 26030), (1370, 14782), (1556, 13015), (1945, 10412), (2603, 7780), (2740, 7391), (3890, 5206)]