20121520923

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{409999}}^1$

素因数の和:410072

約数の個数: 48

約数和(自身を含む): 35817600000

約数和(自身を除く): 15696079077

約数列:

[1, 3, 7, 9, 19, 21, 41, 57, 63, 123, 133, 171, 287, 369, 399, 779, 861, 1197, 2337, 2583, 5453, 7011, 16359, 49077, 409999, 1229997, 2869993, 3689991, 7789981, 8609979, 16809959, 23369943, 25829937, 50429877, 54529867, 70109829, 117669713, 151289631, 163589601, 319389221, 353009139, 490768803, 958167663, 1059027417, 2235724547, 2874502989, 6707173641, 20121520923]

約数ペア:

[(1, 20121520923), (3, 6707173641), (7, 2874502989), (9, 2235724547), (19, 1059027417), (21, 958167663), (41, 490768803), (57, 353009139), (63, 319389221), (123, 163589601), (133, 151289631), (171, 117669713), (287, 70109829), (369, 54529867), (399, 50429877), (779, 25829937), (861, 23369943), (1197, 16809959), (2337, 8609979), (2583, 7789981), (5453, 3689991), (7011, 2869993), (16359, 1229997), (49077, 409999)]