20525220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1129}}^1$

素因数の和:1245

約数の個数: 72

約数和(自身を含む): 62931960

約数和(自身を除く): 42406740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1129, 1212, 1515, 1818, 2020, 2258, 3030, 3387, 3636, 4516, 4545, 5645, 6060, 6774, 9090, 10161, 11290, 13548, 16935, 18180, 20322, 22580, 33870, 40644, 50805, 67740, 101610, 114029, 203220, 228058, 342087, 456116, 570145, 684174, 1026261, 1140290, 1368348, 1710435, 2052522, 2280580, 3420870, 4105044, 5131305, 6841740, 10262610, 20525220]

約数ペア:

[(1, 20525220), (2, 10262610), (3, 6841740), (4, 5131305), (5, 4105044), (6, 3420870), (9, 2280580), (10, 2052522), (12, 1710435), (15, 1368348), (18, 1140290), (20, 1026261), (30, 684174), (36, 570145), (45, 456116), (60, 342087), (90, 228058), (101, 203220), (180, 114029), (202, 101610), (303, 67740), (404, 50805), (505, 40644), (606, 33870), (909, 22580), (1010, 20322), (1129, 18180), (1212, 16935), (1515, 13548), (1818, 11290), (2020, 10161), (2258, 9090), (3030, 6774), (3387, 6060), (3636, 5645), (4516, 4545)]