18138405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{857}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 31135104

約数和(自身を除く): 12996699

約数列:

[1, 3, 5, 15, 17, 51, 83, 85, 249, 255, 415, 857, 1245, 1411, 2571, 4233, 4285, 7055, 12855, 14569, 21165, 43707, 71131, 72845, 213393, 218535, 355655, 1066965, 1209227, 3627681, 6046135, 18138405]

約数ペア:

[(1, 18138405), (3, 6046135), (5, 3627681), (15, 1209227), (17, 1066965), (51, 355655), (83, 218535), (85, 213393), (249, 72845), (255, 71131), (415, 43707), (857, 21165), (1245, 14569), (1411, 12855), (2571, 7055), (4233, 4285)]