20980674

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:78

約数の個数: 144

約数和(自身を含む): 58413600

約数和(自身を除く): 37432926

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 19, 22, 26, 27, 33, 38, 39, 54, 57, 66, 78, 99, 114, 117, 121, 143, 169, 171, 198, 209, 234, 242, 247, 286, 297, 338, 342, 351, 363, 418, 429, 494, 507, 513, 594, 627, 702, 726, 741, 858, 1014, 1026, 1089, 1254, 1287, 1482, 1521, 1573, 1859, 1881, 2178, 2223, 2299, 2574, 2717, 3042, 3146, 3211, 3267, 3718, 3762, 3861, 4446, 4563, 4598, 4719, 5434, 5577, 5643, 6422, 6534, 6669, 6897, 7722, 8151, 9126, 9438, 9633, 11154, 11286, 13338, 13794, 14157, 16302, 16731, 19266, 20449, 20691, 24453, 28314, 28899, 29887, 33462, 35321, 40898, 41382, 42471, 48906, 50193, 57798, 59774, 61347, 62073, 70642, 73359, 84942, 86697, 89661, 100386, 105963, 122694, 124146, 146718, 173394, 179322, 184041, 211926, 268983, 317889, 368082, 388531, 537966, 552123, 635778, 777062, 806949, 953667, 1104246, 1165593, 1613898, 1907334, 2331186, 3496779, 6993558, 10490337, 20980674]

約数ペア:

[(1, 20980674), (2, 10490337), (3, 6993558), (6, 3496779), (9, 2331186), (11, 1907334), (13, 1613898), (18, 1165593), (19, 1104246), (22, 953667), (26, 806949), (27, 777062), (33, 635778), (38, 552123), (39, 537966), (54, 388531), (57, 368082), (66, 317889), (78, 268983), (99, 211926), (114, 184041), (117, 179322), (121, 173394), (143, 146718), (169, 124146), (171, 122694), (198, 105963), (209, 100386), (234, 89661), (242, 86697), (247, 84942), (286, 73359), (297, 70642), (338, 62073), (342, 61347), (351, 59774), (363, 57798), (418, 50193), (429, 48906), (494, 42471), (507, 41382), (513, 40898), (594, 35321), (627, 33462), (702, 29887), (726, 28899), (741, 28314), (858, 24453), (1014, 20691), (1026, 20449), (1089, 19266), (1254, 16731), (1287, 16302), (1482, 14157), (1521, 13794), (1573, 13338), (1859, 11286), (1881, 11154), (2178, 9633), (2223, 9438), (2299, 9126), (2574, 8151), (2717, 7722), (3042, 6897), (3146, 6669), (3211, 6534), (3267, 6422), (3718, 5643), (3762, 5577), (3861, 5434), (4446, 4719), (4563, 4598)]