21560144

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18979}}^1$

素因数の和:19058

約数の個数: 20

約数和(自身を含む): 42363360

約数和(自身を除く): 20803216

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18979, 37958, 75916, 151832, 303664, 1347509, 2695018, 5390036, 10780072, 21560144]

約数ペア:

[(1, 21560144), (2, 10780072), (4, 5390036), (8, 2695018), (16, 1347509), (71, 303664), (142, 151832), (284, 75916), (568, 37958), (1136, 18979)]