21860168

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 25184632

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 53, 86, 88, 106, 109, 172, 212, 218, 344, 424, 436, 473, 583, 872, 946, 1166, 1199, 1892, 2279, 2332, 2398, 3784, 4558, 4664, 4687, 4796, 5777, 9116, 9374, 9592, 11554, 18232, 18748, 23108, 25069, 37496, 46216, 50138, 51557, 63547, 100276, 103114, 127094, 200552, 206228, 248411, 254188, 412456, 496822, 508376, 993644, 1987288, 2732521, 5465042, 10930084, 21860168]

約数ペア:

[(1, 21860168), (2, 10930084), (4, 5465042), (8, 2732521), (11, 1987288), (22, 993644), (43, 508376), (44, 496822), (53, 412456), (86, 254188), (88, 248411), (106, 206228), (109, 200552), (172, 127094), (212, 103114), (218, 100276), (344, 63547), (424, 51557), (436, 50138), (473, 46216), (583, 37496), (872, 25069), (946, 23108), (1166, 18748), (1199, 18232), (1892, 11554), (2279, 9592), (2332, 9374), (2398, 9116), (3784, 5777), (4558, 4796), (4664, 4687)]