21913745

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1063}}^1$

素因数の和:1125

約数の個数: 32

約数和(自身を含む): 32686080

約数和(自身を除く): 10772335

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1063, 1085, 2945, 4123, 5315, 7441, 20197, 20615, 32953, 37205, 100985, 141379, 164765, 230671, 626107, 706895, 1153355, 3130535, 4382749, 21913745]

約数ペア:

[(1, 21913745), (5, 4382749), (7, 3130535), (19, 1153355), (31, 706895), (35, 626107), (95, 230671), (133, 164765), (155, 141379), (217, 100985), (589, 37205), (665, 32953), (1063, 20615), (1085, 20197), (2945, 7441), (4123, 5315)]