21493280

素因数分解:

$2^5\times 5^1\times {\mathrm{134333}}^1$

素因数の和:134348

約数の個数: 24

約数和(自身を含む): 50778252

約数和(自身を除く): 29284972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134333, 268666, 537332, 671665, 1074664, 1343330, 2149328, 2686660, 4298656, 5373320, 10746640, 21493280]

約数ペア:

[(1, 21493280), (2, 10746640), (4, 5373320), (5, 4298656), (8, 2686660), (10, 2149328), (16, 1343330), (20, 1074664), (32, 671665), (40, 537332), (80, 268666), (160, 134333)]