21716394

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{3947}}^1$

素因数の和:4090

約数の個数: 32

約数和(自身を含む): 50029056

約数和(自身を除く): 28312662

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 131, 262, 393, 786, 917, 1834, 2751, 3947, 5502, 7894, 11841, 23682, 27629, 55258, 82887, 165774, 517057, 1034114, 1551171, 3102342, 3619399, 7238798, 10858197, 21716394]

約数ペア:

[(1, 21716394), (2, 10858197), (3, 7238798), (6, 3619399), (7, 3102342), (14, 1551171), (21, 1034114), (42, 517057), (131, 165774), (262, 82887), (393, 55258), (786, 27629), (917, 23682), (1834, 11841), (2751, 7894), (3947, 5502)]