21612279

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 10986441

約数列:

[1, 3, 13, 29, 39, 87, 97, 197, 291, 377, 591, 1131, 1261, 2561, 2813, 3783, 5713, 7683, 8439, 17139, 19109, 36569, 57327, 74269, 109707, 222807, 248417, 554161, 745251, 1662483, 7204093, 21612279]

約数ペア:

[(1, 21612279), (3, 7204093), (13, 1662483), (29, 745251), (39, 554161), (87, 248417), (97, 222807), (197, 109707), (291, 74269), (377, 57327), (591, 36569), (1131, 19109), (1261, 17139), (2561, 8439), (2813, 7683), (3783, 5713)]