20525316

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:609

約数の個数: 72

約数和(自身を含む): 56651616

約数和(自身を除く): 36126300

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 67, 84, 98, 134, 147, 196, 201, 268, 294, 402, 469, 521, 588, 804, 938, 1042, 1407, 1563, 1876, 2084, 2814, 3126, 3283, 3647, 5628, 6252, 6566, 7294, 9849, 10941, 13132, 14588, 19698, 21882, 25529, 34907, 39396, 43764, 51058, 69814, 76587, 102116, 104721, 139628, 153174, 209442, 244349, 306348, 418884, 488698, 733047, 977396, 1466094, 1710443, 2932188, 3420886, 5131329, 6841772, 10262658, 20525316]

約数ペア:

[(1, 20525316), (2, 10262658), (3, 6841772), (4, 5131329), (6, 3420886), (7, 2932188), (12, 1710443), (14, 1466094), (21, 977396), (28, 733047), (42, 488698), (49, 418884), (67, 306348), (84, 244349), (98, 209442), (134, 153174), (147, 139628), (196, 104721), (201, 102116), (268, 76587), (294, 69814), (402, 51058), (469, 43764), (521, 39396), (588, 34907), (804, 25529), (938, 21882), (1042, 19698), (1407, 14588), (1563, 13132), (1876, 10941), (2084, 9849), (2814, 7294), (3126, 6566), (3283, 6252), (3647, 5628)]