20742456

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{397}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 59604480

約数和(自身を除く): 38862024

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 311, 397, 622, 794, 933, 1191, 1244, 1588, 1866, 2177, 2382, 2488, 2779, 3176, 3732, 4354, 4764, 5558, 6531, 7464, 8337, 8708, 9528, 11116, 13062, 16674, 17416, 22232, 26124, 33348, 52248, 66696, 123467, 246934, 370401, 493868, 740802, 864269, 987736, 1481604, 1728538, 2592807, 2963208, 3457076, 5185614, 6914152, 10371228, 20742456]

約数ペア:

[(1, 20742456), (2, 10371228), (3, 6914152), (4, 5185614), (6, 3457076), (7, 2963208), (8, 2592807), (12, 1728538), (14, 1481604), (21, 987736), (24, 864269), (28, 740802), (42, 493868), (56, 370401), (84, 246934), (168, 123467), (311, 66696), (397, 52248), (622, 33348), (794, 26124), (933, 22232), (1191, 17416), (1244, 16674), (1588, 13062), (1866, 11116), (2177, 9528), (2382, 8708), (2488, 8337), (2779, 7464), (3176, 6531), (3732, 5558), (4354, 4764)]