21782264

素因数分解:

$2^3\times 7^2\times {\mathrm{181}}^1\times {\mathrm{307}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 47927880

約数和(自身を除く): 26145616

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 181, 196, 307, 362, 392, 614, 724, 1228, 1267, 1448, 2149, 2456, 2534, 4298, 5068, 8596, 8869, 10136, 15043, 17192, 17738, 30086, 35476, 55567, 60172, 70952, 111134, 120344, 222268, 388969, 444536, 777938, 1555876, 2722783, 3111752, 5445566, 10891132, 21782264]

約数ペア:

[(1, 21782264), (2, 10891132), (4, 5445566), (7, 3111752), (8, 2722783), (14, 1555876), (28, 777938), (49, 444536), (56, 388969), (98, 222268), (181, 120344), (196, 111134), (307, 70952), (362, 60172), (392, 55567), (614, 35476), (724, 30086), (1228, 17738), (1267, 17192), (1448, 15043), (2149, 10136), (2456, 8869), (2534, 8596), (4298, 5068)]