18778004

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{751}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 40427520

約数和(自身を除く): 21649516

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 47, 76, 94, 133, 188, 266, 329, 532, 658, 751, 893, 1316, 1502, 1786, 3004, 3572, 5257, 6251, 10514, 12502, 14269, 21028, 25004, 28538, 35297, 57076, 70594, 99883, 141188, 199766, 247079, 399532, 494158, 670643, 988316, 1341286, 2682572, 4694501, 9389002, 18778004]

約数ペア:

[(1, 18778004), (2, 9389002), (4, 4694501), (7, 2682572), (14, 1341286), (19, 988316), (28, 670643), (38, 494158), (47, 399532), (76, 247079), (94, 199766), (133, 141188), (188, 99883), (266, 70594), (329, 57076), (532, 35297), (658, 28538), (751, 25004), (893, 21028), (1316, 14269), (1502, 12502), (1786, 10514), (3004, 6251), (3572, 5257)]