20658748

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 20588612

約数列:

[1, 2, 4, 11, 22, 43, 44, 61, 86, 122, 172, 179, 244, 358, 473, 671, 716, 946, 1342, 1892, 1969, 2623, 2684, 3938, 5246, 7697, 7876, 10492, 10919, 15394, 21838, 28853, 30788, 43676, 57706, 84667, 115412, 120109, 169334, 240218, 338668, 469517, 480436, 939034, 1878068, 5164687, 10329374, 20658748]

約数ペア:

[(1, 20658748), (2, 10329374), (4, 5164687), (11, 1878068), (22, 939034), (43, 480436), (44, 469517), (61, 338668), (86, 240218), (122, 169334), (172, 120109), (179, 115412), (244, 84667), (358, 57706), (473, 43676), (671, 30788), (716, 28853), (946, 21838), (1342, 15394), (1892, 10919), (1969, 10492), (2623, 7876), (2684, 7697), (3938, 5246)]