21049072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2917}}^1$

素因数の和:2977

約数の個数: 40

約数和(自身を含む): 45590832

約数和(自身を除く): 24541760

約数列:

[1, 2, 4, 8, 11, 16, 22, 41, 44, 82, 88, 164, 176, 328, 451, 656, 902, 1804, 2917, 3608, 5834, 7216, 11668, 23336, 32087, 46672, 64174, 119597, 128348, 239194, 256696, 478388, 513392, 956776, 1315567, 1913552, 2631134, 5262268, 10524536, 21049072]

約数ペア:

[(1, 21049072), (2, 10524536), (4, 5262268), (8, 2631134), (11, 1913552), (16, 1315567), (22, 956776), (41, 513392), (44, 478388), (82, 256696), (88, 239194), (164, 128348), (176, 119597), (328, 64174), (451, 46672), (656, 32087), (902, 23336), (1804, 11668), (2917, 7216), (3608, 5834)]