51221807

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{421}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 64657152

約数和(自身を除く): 13435345

約数列:

[1, 7, 13, 49, 91, 191, 421, 637, 1337, 2483, 2947, 5473, 9359, 17381, 20629, 38311, 80411, 121667, 268177, 562877, 1045343, 3940139, 7317401, 51221807]

約数ペア:

[(1, 51221807), (7, 7317401), (13, 3940139), (49, 1045343), (91, 562877), (191, 268177), (421, 121667), (637, 80411), (1337, 38311), (2483, 20629), (2947, 17381), (5473, 9359)]