20428876

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:119

約数の個数: 96

約数和(自身を含む): 45158400

約数和(自身を除く): 24729524

約数列:

[1, 2, 4, 13, 19, 23, 26, 29, 31, 38, 46, 52, 58, 62, 76, 92, 116, 124, 247, 299, 377, 403, 437, 494, 551, 589, 598, 667, 713, 754, 806, 874, 899, 988, 1102, 1178, 1196, 1334, 1426, 1508, 1612, 1748, 1798, 2204, 2356, 2668, 2852, 3596, 5681, 7163, 7657, 8671, 9269, 11362, 11687, 12673, 13547, 14326, 15314, 17081, 17342, 18538, 20677, 22724, 23374, 25346, 27094, 28652, 30628, 34162, 34684, 37076, 41354, 46748, 50692, 54188, 68324, 82708, 164749, 176111, 222053, 268801, 329498, 352222, 392863, 444106, 537602, 658996, 704444, 785726, 888212, 1075204, 1571452, 5107219, 10214438, 20428876]

約数ペア:

[(1, 20428876), (2, 10214438), (4, 5107219), (13, 1571452), (19, 1075204), (23, 888212), (26, 785726), (29, 704444), (31, 658996), (38, 537602), (46, 444106), (52, 392863), (58, 352222), (62, 329498), (76, 268801), (92, 222053), (116, 176111), (124, 164749), (247, 82708), (299, 68324), (377, 54188), (403, 50692), (437, 46748), (494, 41354), (551, 37076), (589, 34684), (598, 34162), (667, 30628), (713, 28652), (754, 27094), (806, 25346), (874, 23374), (899, 22724), (988, 20677), (1102, 18538), (1178, 17342), (1196, 17081), (1334, 15314), (1426, 14326), (1508, 13547), (1612, 12673), (1748, 11687), (1798, 11362), (2204, 9269), (2356, 8671), (2668, 7657), (2852, 7163), (3596, 5681)]