20121974901

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{499}}^1\times {\mathrm{1499}}^1$

素因数の和:2079

約数の個数: 72

約数和(自身を含む): 34456500000

約数和(自身を除く): 14334525099

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 499, 549, 1281, 1497, 1499, 2989, 3493, 3843, 4491, 4497, 8967, 10479, 10493, 13491, 24451, 26901, 30439, 31437, 31479, 73353, 73451, 91317, 91439, 94437, 213073, 220059, 220353, 273951, 274317, 639219, 640073, 661059, 748001, 822951, 1491511, 1917657, 1920219, 2244003, 4474533, 4480511, 5236007, 5760657, 6732009, 13423599, 13441533, 15708021, 36652049, 40324599, 45628061, 47124063, 109956147, 136884183, 319396427, 329868441, 410652549, 958189281, 2235774989, 2874567843, 6707324967, 20121974901]

約数ペア:

[(1, 20121974901), (3, 6707324967), (7, 2874567843), (9, 2235774989), (21, 958189281), (49, 410652549), (61, 329868441), (63, 319396427), (147, 136884183), (183, 109956147), (427, 47124063), (441, 45628061), (499, 40324599), (549, 36652049), (1281, 15708021), (1497, 13441533), (1499, 13423599), (2989, 6732009), (3493, 5760657), (3843, 5236007), (4491, 4480511), (4497, 4474533), (8967, 2244003), (10479, 1920219), (10493, 1917657), (13491, 1491511), (24451, 822951), (26901, 748001), (30439, 661059), (31437, 640073), (31479, 639219), (73353, 274317), (73451, 273951), (91317, 220353), (91439, 220059), (94437, 213073)]