20705031

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 12242169

約数列:

[1, 3, 9, 17, 27, 51, 79, 153, 237, 459, 571, 711, 1343, 1713, 2133, 4029, 5139, 9707, 12087, 15417, 29121, 36261, 45109, 87363, 135327, 262089, 405981, 766853, 1217943, 2300559, 6901677, 20705031]

約数ペア:

[(1, 20705031), (3, 6901677), (9, 2300559), (17, 1217943), (27, 766853), (51, 405981), (79, 262089), (153, 135327), (237, 87363), (459, 45109), (571, 36261), (711, 29121), (1343, 15417), (1713, 12087), (2133, 9707), (4029, 5139)]