20586728

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 23995672

約数列:

[1, 2, 4, 8, 17, 19, 31, 34, 38, 62, 68, 76, 124, 136, 152, 248, 257, 323, 514, 527, 589, 646, 1028, 1054, 1178, 1292, 2056, 2108, 2356, 2584, 4216, 4369, 4712, 4883, 7967, 8738, 9766, 10013, 15934, 17476, 19532, 20026, 31868, 34952, 39064, 40052, 63736, 80104, 83011, 135439, 151373, 166022, 270878, 302746, 332044, 541756, 605492, 664088, 1083512, 1210984, 2573341, 5146682, 10293364, 20586728]

約数ペア:

[(1, 20586728), (2, 10293364), (4, 5146682), (8, 2573341), (17, 1210984), (19, 1083512), (31, 664088), (34, 605492), (38, 541756), (62, 332044), (68, 302746), (76, 270878), (124, 166022), (136, 151373), (152, 135439), (248, 83011), (257, 80104), (323, 63736), (514, 40052), (527, 39064), (589, 34952), (646, 31868), (1028, 20026), (1054, 19532), (1178, 17476), (1292, 15934), (2056, 10013), (2108, 9766), (2356, 8738), (2584, 7967), (4216, 4883), (4369, 4712)]