21196395

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42821}}^1$

素因数の和:42843

約数の個数: 24

約数和(自身を含む): 40081392

約数和(自身を除く): 18884997

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42821, 128463, 214105, 385389, 471031, 642315, 1413093, 1926945, 2355155, 4239279, 7065465, 21196395]

約数ペア:

[(1, 21196395), (3, 7065465), (5, 4239279), (9, 2355155), (11, 1926945), (15, 1413093), (33, 642315), (45, 471031), (55, 385389), (99, 214105), (165, 128463), (495, 42821)]