81257480

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{38329}}^1$

素因数の和:38393

約数の個数: 32

約数和(自身を含む): 186283800

約数和(自身を除く): 105026320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 38329, 76658, 153316, 191645, 306632, 383290, 766580, 1533160, 2031437, 4062874, 8125748, 10157185, 16251496, 20314370, 40628740, 81257480]

約数ペア:

[(1, 81257480), (2, 40628740), (4, 20314370), (5, 16251496), (8, 10157185), (10, 8125748), (20, 4062874), (40, 2031437), (53, 1533160), (106, 766580), (212, 383290), (265, 306632), (424, 191645), (530, 153316), (1060, 76658), (2120, 38329)]