20615728

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 28238288

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 53, 56, 92, 106, 112, 151, 161, 184, 212, 302, 322, 368, 371, 424, 604, 644, 742, 848, 1057, 1208, 1219, 1288, 1484, 2114, 2416, 2438, 2576, 2968, 3473, 4228, 4876, 5936, 6946, 8003, 8456, 8533, 9752, 13892, 16006, 16912, 17066, 19504, 24311, 27784, 32012, 34132, 48622, 55568, 56021, 64024, 68264, 97244, 112042, 128048, 136528, 184069, 194488, 224084, 368138, 388976, 448168, 736276, 896336, 1288483, 1472552, 2576966, 2945104, 5153932, 10307864, 20615728]

約数ペア:

[(1, 20615728), (2, 10307864), (4, 5153932), (7, 2945104), (8, 2576966), (14, 1472552), (16, 1288483), (23, 896336), (28, 736276), (46, 448168), (53, 388976), (56, 368138), (92, 224084), (106, 194488), (112, 184069), (151, 136528), (161, 128048), (184, 112042), (212, 97244), (302, 68264), (322, 64024), (368, 56021), (371, 55568), (424, 48622), (604, 34132), (644, 32012), (742, 27784), (848, 24311), (1057, 19504), (1208, 17066), (1219, 16912), (1288, 16006), (1484, 13892), (2114, 9752), (2416, 8533), (2438, 8456), (2576, 8003), (2968, 6946), (3473, 5936), (4228, 4876)]