21391248

素因数分解:

$2^4\times 3^1\times {\mathrm{613}}^1\times {\mathrm{727}}^1$

素因数の和:1351

約数の個数: 40

約数和(自身を含む): 55427008

約数和(自身を除く): 34035760

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 613, 727, 1226, 1454, 1839, 2181, 2452, 2908, 3678, 4362, 4904, 5816, 7356, 8724, 9808, 11632, 14712, 17448, 29424, 34896, 445651, 891302, 1336953, 1782604, 2673906, 3565208, 5347812, 7130416, 10695624, 21391248]

約数ペア:

[(1, 21391248), (2, 10695624), (3, 7130416), (4, 5347812), (6, 3565208), (8, 2673906), (12, 1782604), (16, 1336953), (24, 891302), (48, 445651), (613, 34896), (727, 29424), (1226, 17448), (1454, 14712), (1839, 11632), (2181, 9808), (2452, 8724), (2908, 7356), (3678, 5816), (4362, 4904)]