20447661

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 30602880

約数和(自身を除く): 10155219

約数列:

[1, 3, 13, 39, 43, 89, 129, 137, 267, 411, 559, 1157, 1677, 1781, 3471, 3827, 5343, 5891, 11481, 12193, 17673, 36579, 49751, 76583, 149253, 158509, 229749, 475527, 524299, 1572897, 6815887, 20447661]

約数ペア:

[(1, 20447661), (3, 6815887), (13, 1572897), (39, 524299), (43, 475527), (89, 229749), (129, 158509), (137, 149253), (267, 76583), (411, 49751), (559, 36579), (1157, 17673), (1677, 12193), (1781, 11481), (3471, 5891), (3827, 5343)]