20898969

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2069}}^1$

素因数の和:2129

約数の個数: 32

約数和(自身を含む): 35239680

約数和(自身を除く): 14340711

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 259, 273, 481, 777, 1443, 2069, 3367, 6207, 10101, 14483, 26897, 43449, 76553, 80691, 188279, 229659, 535871, 564837, 995189, 1607613, 2985567, 6966323, 20898969]

約数ペア:

[(1, 20898969), (3, 6966323), (7, 2985567), (13, 1607613), (21, 995189), (37, 564837), (39, 535871), (91, 229659), (111, 188279), (259, 80691), (273, 76553), (481, 43449), (777, 26897), (1443, 14483), (2069, 10101), (3367, 6207)]