66982820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 146095488

約数和(自身を除く): 79112668

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 710, 860, 1097, 1420, 2194, 3053, 4388, 5485, 6106, 10970, 12212, 15265, 21940, 30530, 47171, 61060, 77887, 94342, 155774, 188684, 235855, 311548, 389435, 471710, 778870, 943420, 1557740, 3349141, 6698282, 13396564, 16745705, 33491410, 66982820]

約数ペア:

[(1, 66982820), (2, 33491410), (4, 16745705), (5, 13396564), (10, 6698282), (20, 3349141), (43, 1557740), (71, 943420), (86, 778870), (142, 471710), (172, 389435), (215, 311548), (284, 235855), (355, 188684), (430, 155774), (710, 94342), (860, 77887), (1097, 61060), (1420, 47171), (2194, 30530), (3053, 21940), (4388, 15265), (5485, 12212), (6106, 10970)]