81396100

素因数分解:

$2^2\times 5^2\times {\mathrm{813961}}^1$

素因数の和:813975

約数の個数: 18

約数和(自身を含む): 176629754

約数和(自身を除く): 95233654

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 813961, 1627922, 3255844, 4069805, 8139610, 16279220, 20349025, 40698050, 81396100]

約数ペア:

[(1, 81396100), (2, 40698050), (4, 20349025), (5, 16279220), (10, 8139610), (20, 4069805), (25, 3255844), (50, 1627922), (100, 813961)]