20921844665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7939979}}^1$

素因数の和:7940032

約数の個数: 16

約数和(自身を含む): 27440570880

約数和(自身を除く): 6518726215

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7939979, 39699895, 134979643, 246139349, 674898215, 1230696745, 4184368933, 20921844665]

約数ペア:

[(1, 20921844665), (5, 4184368933), (17, 1230696745), (31, 674898215), (85, 246139349), (155, 134979643), (527, 39699895), (2635, 7939979)]