21561808

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{3733}}^1$

素因数の和:3779

約数の個数: 30

約数和(自身を含む): 44102274

約数和(自身を除く): 22540466

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 361, 722, 1444, 2888, 3733, 5776, 7466, 14932, 29864, 59728, 70927, 141854, 283708, 567416, 1134832, 1347613, 2695226, 5390452, 10780904, 21561808]

約数ペア:

[(1, 21561808), (2, 10780904), (4, 5390452), (8, 2695226), (16, 1347613), (19, 1134832), (38, 567416), (76, 283708), (152, 141854), (304, 70927), (361, 59728), (722, 29864), (1444, 14932), (2888, 7466), (3733, 5776)]