20647928

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 50168160

約数和(自身を除く): 29520232

約数列:

[1, 2, 4, 7, 8, 14, 17, 23, 28, 34, 41, 46, 56, 68, 82, 92, 119, 136, 161, 164, 184, 238, 287, 322, 328, 391, 476, 529, 574, 644, 697, 782, 943, 952, 1058, 1148, 1288, 1394, 1564, 1886, 2116, 2296, 2737, 2788, 3128, 3703, 3772, 4232, 4879, 5474, 5576, 6601, 7406, 7544, 8993, 9758, 10948, 13202, 14812, 16031, 17986, 19516, 21689, 21896, 26404, 29624, 32062, 35972, 39032, 43378, 52808, 62951, 64124, 71944, 86756, 112217, 125902, 128248, 151823, 173512, 224434, 251804, 303646, 368713, 448868, 503608, 607292, 737426, 897736, 1214584, 1474852, 2580991, 2949704, 5161982, 10323964, 20647928]

約数ペア:

[(1, 20647928), (2, 10323964), (4, 5161982), (7, 2949704), (8, 2580991), (14, 1474852), (17, 1214584), (23, 897736), (28, 737426), (34, 607292), (41, 503608), (46, 448868), (56, 368713), (68, 303646), (82, 251804), (92, 224434), (119, 173512), (136, 151823), (161, 128248), (164, 125902), (184, 112217), (238, 86756), (287, 71944), (322, 64124), (328, 62951), (391, 52808), (476, 43378), (529, 39032), (574, 35972), (644, 32062), (697, 29624), (782, 26404), (943, 21896), (952, 21689), (1058, 19516), (1148, 17986), (1288, 16031), (1394, 14812), (1564, 13202), (1886, 10948), (2116, 9758), (2296, 8993), (2737, 7544), (2788, 7406), (3128, 6601), (3703, 5576), (3772, 5474), (4232, 4879)]