21796173

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 38438400

約数和(自身を除く): 16642227

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 131, 133, 139, 171, 393, 399, 417, 917, 973, 1179, 1197, 1251, 2489, 2641, 2751, 2919, 7467, 7923, 8253, 8757, 17423, 18209, 18487, 22401, 23769, 52269, 54627, 55461, 127463, 156807, 163881, 166383, 345971, 382389, 1037913, 1147167, 2421797, 3113739, 7265391, 21796173]

約数ペア:

[(1, 21796173), (3, 7265391), (7, 3113739), (9, 2421797), (19, 1147167), (21, 1037913), (57, 382389), (63, 345971), (131, 166383), (133, 163881), (139, 156807), (171, 127463), (393, 55461), (399, 54627), (417, 52269), (917, 23769), (973, 22401), (1179, 18487), (1197, 18209), (1251, 17423), (2489, 8757), (2641, 8253), (2751, 7923), (2919, 7467)]