21806835

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85517}}^1$

素因数の和:85542

約数の個数: 16

約数和(自身を含む): 36943776

約数和(自身を除く): 15136941

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85517, 256551, 427585, 1282755, 1453789, 4361367, 7268945, 21806835]

約数ペア:

[(1, 21806835), (3, 7268945), (5, 4361367), (15, 1453789), (17, 1282755), (51, 427585), (85, 256551), (255, 85517)]