81180380

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55603}}^1$

素因数の和:55685

約数の個数: 24

約数和(自身を含む): 172817232

約数和(自身を除く): 91636852

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55603, 111206, 222412, 278015, 556030, 1112060, 4059019, 8118038, 16236076, 20295095, 40590190, 81180380]

約数ペア:

[(1, 81180380), (2, 40590190), (4, 20295095), (5, 16236076), (10, 8118038), (20, 4059019), (73, 1112060), (146, 556030), (292, 278015), (365, 222412), (730, 111206), (1460, 55603)]