21330580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1459}}^1$

素因数の和:1528

約数の個数: 48

約数和(自身を含む): 48565440

約数和(自身を除く): 27234860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1459, 1462, 2918, 2924, 3655, 5836, 7295, 7310, 14590, 14620, 24803, 29180, 49606, 62737, 99212, 124015, 125474, 248030, 250948, 313685, 496060, 627370, 1066529, 1254740, 2133058, 4266116, 5332645, 10665290, 21330580]

約数ペア:

[(1, 21330580), (2, 10665290), (4, 5332645), (5, 4266116), (10, 2133058), (17, 1254740), (20, 1066529), (34, 627370), (43, 496060), (68, 313685), (85, 250948), (86, 248030), (170, 125474), (172, 124015), (215, 99212), (340, 62737), (430, 49606), (731, 29180), (860, 24803), (1459, 14620), (1462, 14590), (2918, 7310), (2924, 7295), (3655, 5836)]