20781642

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 50079744

約数和(自身を除く): 29298102

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 43, 74, 86, 111, 129, 222, 258, 259, 301, 311, 518, 602, 622, 777, 903, 933, 1554, 1591, 1806, 1866, 2177, 3182, 4354, 4773, 6531, 9546, 11137, 11507, 13062, 13373, 22274, 23014, 26746, 33411, 34521, 40119, 66822, 69042, 80238, 80549, 93611, 161098, 187222, 241647, 280833, 483294, 494801, 561666, 989602, 1484403, 2968806, 3463607, 6927214, 10390821, 20781642]

約数ペア:

[(1, 20781642), (2, 10390821), (3, 6927214), (6, 3463607), (7, 2968806), (14, 1484403), (21, 989602), (37, 561666), (42, 494801), (43, 483294), (74, 280833), (86, 241647), (111, 187222), (129, 161098), (222, 93611), (258, 80549), (259, 80238), (301, 69042), (311, 66822), (518, 40119), (602, 34521), (622, 33411), (777, 26746), (903, 23014), (933, 22274), (1554, 13373), (1591, 13062), (1806, 11507), (1866, 11137), (2177, 9546), (3182, 6531), (4354, 4773)]