20980872

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:531

約数の個数: 96

約数和(自身を含む): 63180000

約数和(自身を除く): 42199128

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 59, 66, 72, 88, 99, 118, 132, 177, 198, 236, 264, 354, 396, 449, 472, 531, 649, 708, 792, 898, 1062, 1298, 1347, 1416, 1796, 1947, 2124, 2596, 2694, 3592, 3894, 4041, 4248, 4939, 5192, 5388, 5841, 7788, 8082, 9878, 10776, 11682, 14817, 15576, 16164, 19756, 23364, 26491, 29634, 32328, 39512, 44451, 46728, 52982, 59268, 79473, 88902, 105964, 118536, 158946, 177804, 211928, 238419, 291401, 317892, 355608, 476838, 582802, 635784, 874203, 953676, 1165604, 1748406, 1907352, 2331208, 2622609, 3496812, 5245218, 6993624, 10490436, 20980872]

約数ペア:

[(1, 20980872), (2, 10490436), (3, 6993624), (4, 5245218), (6, 3496812), (8, 2622609), (9, 2331208), (11, 1907352), (12, 1748406), (18, 1165604), (22, 953676), (24, 874203), (33, 635784), (36, 582802), (44, 476838), (59, 355608), (66, 317892), (72, 291401), (88, 238419), (99, 211928), (118, 177804), (132, 158946), (177, 118536), (198, 105964), (236, 88902), (264, 79473), (354, 59268), (396, 52982), (449, 46728), (472, 44451), (531, 39512), (649, 32328), (708, 29634), (792, 26491), (898, 23364), (1062, 19756), (1298, 16164), (1347, 15576), (1416, 14817), (1796, 11682), (1947, 10776), (2124, 9878), (2596, 8082), (2694, 7788), (3592, 5841), (3894, 5388), (4041, 5192), (4248, 4939)]