21481120

素因数分解:

$2^5\times 5^1\times {\mathrm{134257}}^1$

素因数の和:134272

約数の個数: 24

約数和(自身を含む): 50749524

約数和(自身を除く): 29268404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134257, 268514, 537028, 671285, 1074056, 1342570, 2148112, 2685140, 4296224, 5370280, 10740560, 21481120]

約数ペア:

[(1, 21481120), (2, 10740560), (4, 5370280), (5, 4296224), (8, 2685140), (10, 2148112), (16, 1342570), (20, 1074056), (32, 671285), (40, 537028), (80, 268514), (160, 134257)]