21877401

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 36241408

約数和(自身を除く): 14364007

約数列:

[1, 3, 7, 13, 21, 39, 91, 127, 273, 381, 631, 889, 1651, 1893, 2667, 4417, 4953, 8203, 11557, 13251, 24609, 34671, 57421, 80137, 172263, 240411, 560959, 1041781, 1682877, 3125343, 7292467, 21877401]

約数ペア:

[(1, 21877401), (3, 7292467), (7, 3125343), (13, 1682877), (21, 1041781), (39, 560959), (91, 240411), (127, 172263), (273, 80137), (381, 57421), (631, 34671), (889, 24609), (1651, 13251), (1893, 11557), (2667, 8203), (4417, 4953)]