21082838

素因数分解:

$2^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 37473600

約数和(自身を除く): 16390762

約数列:

[1, 2, 7, 14, 49, 73, 98, 146, 343, 421, 511, 686, 842, 1022, 2947, 3577, 5894, 7154, 20629, 25039, 30733, 41258, 50078, 61466, 144403, 215131, 288806, 430262, 1505917, 3011834, 10541419, 21082838]

約数ペア:

[(1, 21082838), (2, 10541419), (7, 3011834), (14, 1505917), (49, 430262), (73, 288806), (98, 215131), (146, 144403), (343, 61466), (421, 50078), (511, 41258), (686, 30733), (842, 25039), (1022, 20629), (2947, 7154), (3577, 5894)]