21307809

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{467}}^1$

素因数の和:764

約数の個数: 16

約数和(自身を含む): 29023488

約数和(自身を除く): 7715679

約数列:

[1, 3, 67, 201, 227, 467, 681, 1401, 15209, 31289, 45627, 93867, 106009, 318027, 7102603, 21307809]

約数ペア:

[(1, 21307809), (3, 7102603), (67, 318027), (201, 106009), (227, 93867), (467, 45627), (681, 31289), (1401, 15209)]