20499858

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 48885120

約数和(自身を除く): 28385262

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 102, 137, 153, 163, 274, 306, 326, 411, 459, 489, 822, 918, 978, 1233, 1467, 2329, 2466, 2771, 2934, 3699, 4401, 4658, 5542, 6987, 7398, 8313, 8802, 13974, 16626, 20961, 22331, 24939, 41922, 44662, 49878, 62883, 66993, 74817, 125766, 133986, 149634, 200979, 379627, 401958, 602937, 759254, 1138881, 1205874, 2277762, 3416643, 6833286, 10249929, 20499858]

約数ペア:

[(1, 20499858), (2, 10249929), (3, 6833286), (6, 3416643), (9, 2277762), (17, 1205874), (18, 1138881), (27, 759254), (34, 602937), (51, 401958), (54, 379627), (102, 200979), (137, 149634), (153, 133986), (163, 125766), (274, 74817), (306, 66993), (326, 62883), (411, 49878), (459, 44662), (489, 41922), (822, 24939), (918, 22331), (978, 20961), (1233, 16626), (1467, 13974), (2329, 8802), (2466, 8313), (2771, 7398), (2934, 6987), (3699, 5542), (4401, 4658)]