21851128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1289}}^1$

素因数の和:1471

約数の個数: 32

約数和(自身を含む): 44427600

約数和(自身を除く): 22576472

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 163, 326, 652, 1289, 1304, 2119, 2578, 4238, 5156, 8476, 10312, 16757, 16952, 33514, 67028, 134056, 210107, 420214, 840428, 1680856, 2731391, 5462782, 10925564, 21851128]

約数ペア:

[(1, 21851128), (2, 10925564), (4, 5462782), (8, 2731391), (13, 1680856), (26, 840428), (52, 420214), (104, 210107), (163, 134056), (326, 67028), (652, 33514), (1289, 16952), (1304, 16757), (2119, 10312), (2578, 8476), (4238, 5156)]