20477886

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:881

約数の個数: 64

約数和(自身を含む): 49835520

約数和(自身を除く): 29357634

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 29, 33, 39, 58, 66, 78, 87, 143, 174, 286, 319, 377, 429, 638, 754, 823, 858, 957, 1131, 1646, 1914, 2262, 2469, 4147, 4938, 8294, 9053, 10699, 12441, 18106, 21398, 23867, 24882, 27159, 32097, 47734, 54318, 64194, 71601, 117689, 143202, 235378, 262537, 310271, 353067, 525074, 620542, 706134, 787611, 930813, 1575222, 1861626, 3412981, 6825962, 10238943, 20477886]

約数ペア:

[(1, 20477886), (2, 10238943), (3, 6825962), (6, 3412981), (11, 1861626), (13, 1575222), (22, 930813), (26, 787611), (29, 706134), (33, 620542), (39, 525074), (58, 353067), (66, 310271), (78, 262537), (87, 235378), (143, 143202), (174, 117689), (286, 71601), (319, 64194), (377, 54318), (429, 47734), (638, 32097), (754, 27159), (823, 24882), (858, 23867), (957, 21398), (1131, 18106), (1646, 12441), (1914, 10699), (2262, 9053), (2469, 8294), (4147, 4938)]