21291513

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{1279}}^1$

素因数の和:1492

約数の個数: 16

約数和(自身を含む): 29491200

約数和(自身を除く): 8199687

約数列:

[1, 3, 31, 93, 179, 537, 1279, 3837, 5549, 16647, 39649, 118947, 228941, 686823, 7097171, 21291513]

約数ペア:

[(1, 21291513), (3, 7097171), (31, 686823), (93, 228941), (179, 118947), (537, 39649), (1279, 16647), (3837, 5549)]