20804936845

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{17971}}^1$

素因数の和:18122

約数の個数: 64

約数和(自身を含む): 32463470592

約数和(自身を除く): 11658533747

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 97, 155, 217, 341, 385, 485, 679, 1067, 1085, 1705, 2387, 3007, 3395, 5335, 7469, 11935, 15035, 17971, 21049, 33077, 37345, 89855, 105245, 125797, 165385, 197681, 231539, 557101, 628985, 988405, 1157695, 1383767, 1743187, 2785505, 3899707, 6128111, 6918835, 8715935, 12202309, 19175057, 19498535, 30640555, 42896777, 54038797, 61011545, 95875285, 134225399, 214483885, 270193985, 378271579, 594426767, 671126995, 1891357895, 2972133835, 4160987369, 20804936845]

約数ペア:

[(1, 20804936845), (5, 4160987369), (7, 2972133835), (11, 1891357895), (31, 671126995), (35, 594426767), (55, 378271579), (77, 270193985), (97, 214483885), (155, 134225399), (217, 95875285), (341, 61011545), (385, 54038797), (485, 42896777), (679, 30640555), (1067, 19498535), (1085, 19175057), (1705, 12202309), (2387, 8715935), (3007, 6918835), (3395, 6128111), (5335, 3899707), (7469, 2785505), (11935, 1743187), (15035, 1383767), (17971, 1157695), (21049, 988405), (33077, 628985), (37345, 557101), (89855, 231539), (105245, 197681), (125797, 165385)]