20511645

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 43338240

約数和(自身を除く): 22826595

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 43, 49, 55, 59, 77, 105, 129, 147, 165, 177, 215, 231, 245, 295, 301, 385, 413, 473, 539, 645, 649, 735, 885, 903, 1155, 1239, 1419, 1505, 1617, 1947, 2065, 2107, 2365, 2537, 2695, 2891, 3245, 3311, 4515, 4543, 6195, 6321, 7095, 7611, 8085, 8673, 9735, 9933, 10535, 12685, 13629, 14455, 16555, 17759, 22715, 23177, 27907, 31605, 31801, 38055, 43365, 49665, 53277, 68145, 69531, 83721, 88795, 95403, 115885, 124313, 139535, 159005, 195349, 266385, 347655, 372939, 418605, 477015, 586047, 621565, 976745, 1367443, 1864695, 2930235, 4102329, 6837215, 20511645]

約数ペア:

[(1, 20511645), (3, 6837215), (5, 4102329), (7, 2930235), (11, 1864695), (15, 1367443), (21, 976745), (33, 621565), (35, 586047), (43, 477015), (49, 418605), (55, 372939), (59, 347655), (77, 266385), (105, 195349), (129, 159005), (147, 139535), (165, 124313), (177, 115885), (215, 95403), (231, 88795), (245, 83721), (295, 69531), (301, 68145), (385, 53277), (413, 49665), (473, 43365), (539, 38055), (645, 31801), (649, 31605), (735, 27907), (885, 23177), (903, 22715), (1155, 17759), (1239, 16555), (1419, 14455), (1505, 13629), (1617, 12685), (1947, 10535), (2065, 9933), (2107, 9735), (2365, 8673), (2537, 8085), (2695, 7611), (2891, 7095), (3245, 6321), (3311, 6195), (4515, 4543)]