21608870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1609}}^1$

素因数の和:1712

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20122330

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1609, 2686, 3218, 6715, 8045, 13430, 16090, 27353, 54706, 127111, 136765, 254222, 273530, 635555, 1271110, 2160887, 4321774, 10804435, 21608870]

約数ペア:

[(1, 21608870), (2, 10804435), (5, 4321774), (10, 2160887), (17, 1271110), (34, 635555), (79, 273530), (85, 254222), (158, 136765), (170, 127111), (395, 54706), (790, 27353), (1343, 16090), (1609, 13430), (2686, 8045), (3218, 6715)]