21621501

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 37402560

約数和(自身を除く): 15781059

約数列:

[1, 3, 9, 11, 17, 29, 33, 51, 87, 99, 153, 187, 261, 319, 443, 493, 561, 957, 1329, 1479, 1683, 2871, 3987, 4437, 4873, 5423, 7531, 12847, 14619, 16269, 22593, 38541, 43857, 48807, 67779, 82841, 115623, 141317, 218399, 248523, 423951, 655197, 745569, 1271853, 1965591, 2402389, 7207167, 21621501]

約数ペア:

[(1, 21621501), (3, 7207167), (9, 2402389), (11, 1965591), (17, 1271853), (29, 745569), (33, 655197), (51, 423951), (87, 248523), (99, 218399), (153, 141317), (187, 115623), (261, 82841), (319, 67779), (443, 48807), (493, 43857), (561, 38541), (957, 22593), (1329, 16269), (1479, 14619), (1683, 12847), (2871, 7531), (3987, 5423), (4437, 4873)]