21370959

素因数分解:

$3^4\times {\mathrm{439}}^1\times {\mathrm{601}}^1$

素因数の和:1052

約数の個数: 20

約数和(自身を含む): 32050480

約数和(自身を除く): 10679521

約数列:

[1, 3, 9, 27, 81, 439, 601, 1317, 1803, 3951, 5409, 11853, 16227, 35559, 48681, 263839, 791517, 2374551, 7123653, 21370959]

約数ペア:

[(1, 21370959), (3, 7123653), (9, 2374551), (27, 791517), (81, 263839), (439, 48681), (601, 35559), (1317, 16227), (1803, 11853), (3951, 5409)]