21312830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 27209410

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 89, 110, 154, 178, 311, 385, 445, 622, 623, 770, 890, 979, 1246, 1555, 1958, 2177, 3110, 3115, 3421, 4354, 4895, 6230, 6842, 6853, 9790, 10885, 13706, 17105, 21770, 23947, 27679, 34210, 34265, 47894, 55358, 68530, 119735, 138395, 193753, 239470, 276790, 304469, 387506, 608938, 968765, 1522345, 1937530, 2131283, 3044690, 4262566, 10656415, 21312830]

約数ペア:

[(1, 21312830), (2, 10656415), (5, 4262566), (7, 3044690), (10, 2131283), (11, 1937530), (14, 1522345), (22, 968765), (35, 608938), (55, 387506), (70, 304469), (77, 276790), (89, 239470), (110, 193753), (154, 138395), (178, 119735), (311, 68530), (385, 55358), (445, 47894), (622, 34265), (623, 34210), (770, 27679), (890, 23947), (979, 21770), (1246, 17105), (1555, 13706), (1958, 10885), (2177, 9790), (3110, 6853), (3115, 6842), (3421, 6230), (4354, 4895)]