21512764

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8443}}^1$

素因数の和:8474

約数の個数: 36

約数和(自身を含む): 47168184

約数和(自身を除く): 25655420

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8443, 16886, 33772, 59101, 109759, 118202, 219518, 236404, 413707, 439036, 768313, 827414, 1536626, 1654828, 3073252, 5378191, 10756382, 21512764]

約数ペア:

[(1, 21512764), (2, 10756382), (4, 5378191), (7, 3073252), (13, 1654828), (14, 1536626), (26, 827414), (28, 768313), (49, 439036), (52, 413707), (91, 236404), (98, 219518), (182, 118202), (196, 109759), (364, 59101), (637, 33772), (1274, 16886), (2548, 8443)]