155111780

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{11987}}^1$

素因数の和:12643

約数の個数: 24

約数和(自身を含む): 326265408

約数和(自身を除く): 171153628

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6470, 11987, 12940, 23974, 47948, 59935, 119870, 239740, 7755589, 15511178, 31022356, 38777945, 77555890, 155111780]

約数ペア:

[(1, 155111780), (2, 77555890), (4, 38777945), (5, 31022356), (10, 15511178), (20, 7755589), (647, 239740), (1294, 119870), (2588, 59935), (3235, 47948), (6470, 23974), (11987, 12940)]