20102220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3851}}^1$

素因数の和:3895

約数の個数: 72

約数和(自身を含む): 63095760

約数和(自身を除く): 42993540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 3851, 5220, 7702, 11553, 15404, 19255, 23106, 34659, 38510, 46212, 57765, 69318, 77020, 111679, 115530, 138636, 173295, 223358, 231060, 335037, 346590, 446716, 558395, 670074, 693180, 1005111, 1116790, 1340148, 1675185, 2010222, 2233580, 3350370, 4020444, 5025555, 6700740, 10051110, 20102220]

約数ペア:

[(1, 20102220), (2, 10051110), (3, 6700740), (4, 5025555), (5, 4020444), (6, 3350370), (9, 2233580), (10, 2010222), (12, 1675185), (15, 1340148), (18, 1116790), (20, 1005111), (29, 693180), (30, 670074), (36, 558395), (45, 446716), (58, 346590), (60, 335037), (87, 231060), (90, 223358), (116, 173295), (145, 138636), (174, 115530), (180, 111679), (261, 77020), (290, 69318), (348, 57765), (435, 46212), (522, 38510), (580, 34659), (870, 23106), (1044, 19255), (1305, 15404), (1740, 11553), (2610, 7702), (3851, 5220)]