21953240

素因数分解:

$2^3\times 5^1\times {\mathrm{548831}}^1$

素因数の和:548842

約数の個数: 16

約数和(自身を含む): 49394880

約数和(自身を除く): 27441640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548831, 1097662, 2195324, 2744155, 4390648, 5488310, 10976620, 21953240]

約数ペア:

[(1, 21953240), (2, 10976620), (4, 5488310), (5, 4390648), (8, 2744155), (10, 2195324), (20, 1097662), (40, 548831)]