19857201

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10391}}^1$

素因数の和:10421

約数の個数: 24

約数和(自身を含む): 33171264

約数和(自身を除く): 13314063

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10391, 31173, 72737, 135083, 218211, 405249, 509159, 945581, 1527477, 2836743, 6619067, 19857201]

約数ペア:

[(1, 19857201), (3, 6619067), (7, 2836743), (13, 1527477), (21, 945581), (39, 509159), (49, 405249), (91, 218211), (147, 135083), (273, 72737), (637, 31173), (1911, 10391)]