21393045

素因数分解:

$3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1481}}^1$

素因数の和:1602

約数の個数: 32

約数和(自身を含む): 38413440

約数和(自身を除く): 17020395

約数列:

[1, 3, 5, 9, 15, 27, 45, 107, 135, 321, 535, 963, 1481, 1605, 2889, 4443, 4815, 7405, 13329, 14445, 22215, 39987, 66645, 158467, 199935, 475401, 792335, 1426203, 2377005, 4278609, 7131015, 21393045]

約数ペア:

[(1, 21393045), (3, 7131015), (5, 4278609), (9, 2377005), (15, 1426203), (27, 792335), (45, 475401), (107, 199935), (135, 158467), (321, 66645), (535, 39987), (963, 22215), (1481, 14445), (1605, 13329), (2889, 7405), (4443, 4815)]