21716565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6551}}^1$

素因数の和:6589

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 17909931

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 6551, 19653, 32755, 85163, 98265, 111367, 255489, 334101, 425815, 556835, 1277445, 1447771, 1670505, 4343313, 7238855, 21716565]

約数ペア:

[(1, 21716565), (3, 7238855), (5, 4343313), (13, 1670505), (15, 1447771), (17, 1277445), (39, 556835), (51, 425815), (65, 334101), (85, 255489), (195, 111367), (221, 98265), (255, 85163), (663, 32755), (1105, 19653), (3315, 6551)]