28691117

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{617}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 36494136

約数和(自身を除く): 7803019

約数列:

[1, 7, 13, 49, 73, 91, 511, 617, 637, 949, 3577, 4319, 6643, 8021, 30233, 45041, 46501, 56147, 315287, 393029, 585533, 2207009, 4098731, 28691117]

約数ペア:

[(1, 28691117), (7, 4098731), (13, 2207009), (49, 585533), (73, 393029), (91, 315287), (511, 56147), (617, 46501), (637, 45041), (949, 30233), (3577, 8021), (4319, 6643)]