18979968007

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{59}}^2\times {\mathrm{419}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 26127480960

約数和(自身を除く): 7147512953

約数列:

[1, 7, 11, 13, 59, 77, 91, 143, 169, 413, 419, 649, 767, 1001, 1183, 1859, 2933, 3481, 4543, 4609, 5369, 5447, 8437, 9971, 13013, 24367, 24721, 32263, 38129, 38291, 45253, 59059, 59917, 69797, 70811, 109681, 173047, 268037, 271931, 316771, 321373, 419419, 495677, 497783, 588289, 767767, 778921, 1458539, 1903517, 2249611, 3484481, 3535103, 4118023, 4177849, 5452447, 6471179, 10209773, 16043929, 18961007, 24745721, 29244943, 45298253, 45956339, 112307503, 132727049, 208571077, 246493091, 321694373, 1459997539, 1725451637, 2711424001, 18979968007]

約数ペア:

[(1, 18979968007), (7, 2711424001), (11, 1725451637), (13, 1459997539), (59, 321694373), (77, 246493091), (91, 208571077), (143, 132727049), (169, 112307503), (413, 45956339), (419, 45298253), (649, 29244943), (767, 24745721), (1001, 18961007), (1183, 16043929), (1859, 10209773), (2933, 6471179), (3481, 5452447), (4543, 4177849), (4609, 4118023), (5369, 3535103), (5447, 3484481), (8437, 2249611), (9971, 1903517), (13013, 1458539), (24367, 778921), (24721, 767767), (32263, 588289), (38129, 497783), (38291, 495677), (45253, 419419), (59059, 321373), (59917, 316771), (69797, 271931), (70811, 268037), (109681, 173047)]