20180899864

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1\times {\mathrm{607}}^1$

素因数の和:1220

約数の個数: 64

約数和(自身を含む): 38832157440

約数和(自身を除く): 18651257576

約数列:

[1, 2, 4, 8, 61, 122, 193, 244, 353, 386, 488, 607, 706, 772, 1214, 1412, 1544, 2428, 2824, 4856, 11773, 21533, 23546, 37027, 43066, 47092, 68129, 74054, 86132, 94184, 117151, 136258, 148108, 172264, 214271, 234302, 272516, 296216, 428542, 468604, 545032, 857084, 937208, 1714168, 4155869, 7146211, 8311738, 13070531, 14292422, 16623476, 26141062, 28584844, 33246952, 41354303, 52282124, 57169688, 82708606, 104564248, 165417212, 330834424, 2522612483, 5045224966, 10090449932, 20180899864]

約数ペア:

[(1, 20180899864), (2, 10090449932), (4, 5045224966), (8, 2522612483), (61, 330834424), (122, 165417212), (193, 104564248), (244, 82708606), (353, 57169688), (386, 52282124), (488, 41354303), (607, 33246952), (706, 28584844), (772, 26141062), (1214, 16623476), (1412, 14292422), (1544, 13070531), (2428, 8311738), (2824, 7146211), (4856, 4155869), (11773, 1714168), (21533, 937208), (23546, 857084), (37027, 545032), (43066, 468604), (47092, 428542), (68129, 296216), (74054, 272516), (86132, 234302), (94184, 214271), (117151, 172264), (136258, 148108)]