1897218045

素因数分解:

$3^4\times 5^1\times {\mathrm{4684489}}^1$

素因数の和:4684506

約数の個数: 20

約数和(自身を含む): 3400939740

約数和(自身を除く): 1503721695

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4684489, 14053467, 23422445, 42160401, 70267335, 126481203, 210802005, 379443609, 632406015, 1897218045]

約数ペア:

[(1, 1897218045), (3, 632406015), (5, 379443609), (9, 210802005), (15, 126481203), (27, 70267335), (45, 42160401), (81, 23422445), (135, 14053467), (405, 4684489)]