21653863

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^3\times {\mathrm{41}}^1$

素因数の和:116

約数の個数: 32

約数和(自身を含む): 29191680

約数和(自身を除く): 7537817

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 361, 451, 779, 1463, 2527, 3157, 3971, 5453, 6859, 8569, 14801, 27797, 48013, 59983, 75449, 103607, 162811, 281219, 528143, 1139677, 1968533, 3093409, 21653863]

約数ペア:

[(1, 21653863), (7, 3093409), (11, 1968533), (19, 1139677), (41, 528143), (77, 281219), (133, 162811), (209, 103607), (287, 75449), (361, 59983), (451, 48013), (779, 27797), (1463, 14801), (2527, 8569), (3157, 6859), (3971, 5453)]