20127405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4643}}^1$

素因数の和:4685

約数の個数: 24

約数和(自身を含む): 34216992

約数和(自身を除く): 14089587

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4643, 13929, 23215, 69645, 78931, 236793, 394655, 1183965, 1341827, 4025481, 6709135, 20127405]

約数ペア:

[(1, 20127405), (3, 6709135), (5, 4025481), (15, 1341827), (17, 1183965), (51, 394655), (85, 236793), (255, 78931), (289, 69645), (867, 23215), (1445, 13929), (4335, 4643)]