81718180

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{27059}}^1$

素因数の和:27219

約数の個数: 24

約数和(自身を含む): 172751040

約数和(自身を除く): 91032860

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 27059, 54118, 108236, 135295, 270590, 541180, 4085909, 8171818, 16343636, 20429545, 40859090, 81718180]

約数ペア:

[(1, 81718180), (2, 40859090), (4, 20429545), (5, 16343636), (10, 8171818), (20, 4085909), (151, 541180), (302, 270590), (604, 135295), (755, 108236), (1510, 54118), (3020, 27059)]