20917863421

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{739121}}^1$

素因数の和:739452

約数の個数: 16

約数和(自身を含む): 25827879168

約数和(自身を除く): 4910015747

約数列:

[1, 7, 13, 91, 311, 2177, 4043, 28301, 739121, 5173847, 9608573, 67260011, 229866631, 1609066417, 2988266203, 20917863421]

約数ペア:

[(1, 20917863421), (7, 2988266203), (13, 1609066417), (91, 229866631), (311, 67260011), (2177, 9608573), (4043, 5173847), (28301, 739121)]