21165747

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1\times {\mathrm{509}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 7622733

約数列:

[1, 3, 83, 167, 249, 501, 509, 1527, 13861, 41583, 42247, 85003, 126741, 255009, 7055249, 21165747]

約数ペア:

[(1, 21165747), (3, 7055249), (83, 255009), (167, 126741), (249, 85003), (501, 42247), (509, 41583), (1527, 13861)]