21057944

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{653}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 41202000

約数和(自身を除く): 20144056

約数列:

[1, 2, 4, 8, 29, 58, 116, 139, 232, 278, 556, 653, 1112, 1306, 2612, 4031, 5224, 8062, 16124, 18937, 32248, 37874, 75748, 90767, 151496, 181534, 363068, 726136, 2632243, 5264486, 10528972, 21057944]

約数ペア:

[(1, 21057944), (2, 10528972), (4, 5264486), (8, 2632243), (29, 726136), (58, 363068), (116, 181534), (139, 151496), (232, 90767), (278, 75748), (556, 37874), (653, 32248), (1112, 18937), (1306, 16124), (2612, 8062), (4031, 5224)]