20985756

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 54742800

約数和(自身を除く): 33757044

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 97, 121, 132, 149, 194, 242, 291, 298, 363, 388, 447, 484, 582, 596, 726, 894, 1067, 1164, 1452, 1639, 1788, 2134, 3201, 3278, 4268, 4917, 6402, 6556, 9834, 11737, 12804, 14453, 18029, 19668, 23474, 28906, 35211, 36058, 43359, 46948, 54087, 57812, 70422, 72116, 86718, 108174, 140844, 158983, 173436, 216348, 317966, 476949, 635932, 953898, 1748813, 1907796, 3497626, 5246439, 6995252, 10492878, 20985756]

約数ペア:

[(1, 20985756), (2, 10492878), (3, 6995252), (4, 5246439), (6, 3497626), (11, 1907796), (12, 1748813), (22, 953898), (33, 635932), (44, 476949), (66, 317966), (97, 216348), (121, 173436), (132, 158983), (149, 140844), (194, 108174), (242, 86718), (291, 72116), (298, 70422), (363, 57812), (388, 54087), (447, 46948), (484, 43359), (582, 36058), (596, 35211), (726, 28906), (894, 23474), (1067, 19668), (1164, 18029), (1452, 14453), (1639, 12804), (1788, 11737), (2134, 9834), (3201, 6556), (3278, 6402), (4268, 4917)]