20109796

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 43666560

約数和(自身を除く): 23556764

約数列:

[1, 2, 4, 7, 14, 28, 37, 47, 49, 59, 74, 94, 98, 118, 148, 188, 196, 236, 259, 329, 413, 518, 658, 826, 1036, 1316, 1652, 1739, 1813, 2183, 2303, 2773, 2891, 3478, 3626, 4366, 4606, 5546, 5782, 6956, 7252, 8732, 9212, 11092, 11564, 12173, 15281, 19411, 24346, 30562, 38822, 48692, 61124, 77644, 85211, 102601, 106967, 135877, 170422, 205202, 213934, 271754, 340844, 410404, 427868, 543508, 718207, 1436414, 2872828, 5027449, 10054898, 20109796]

約数ペア:

[(1, 20109796), (2, 10054898), (4, 5027449), (7, 2872828), (14, 1436414), (28, 718207), (37, 543508), (47, 427868), (49, 410404), (59, 340844), (74, 271754), (94, 213934), (98, 205202), (118, 170422), (148, 135877), (188, 106967), (196, 102601), (236, 85211), (259, 77644), (329, 61124), (413, 48692), (518, 38822), (658, 30562), (826, 24346), (1036, 19411), (1316, 15281), (1652, 12173), (1739, 11564), (1813, 11092), (2183, 9212), (2303, 8732), (2773, 7252), (2891, 6956), (3478, 5782), (3626, 5546), (4366, 4606)]