20109992

素因数分解:

$2^3\times 7^2\times {\mathrm{29}}^2\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 46171710

約数和(自身を除く): 26061718

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 49, 56, 58, 61, 98, 116, 122, 196, 203, 232, 244, 392, 406, 427, 488, 812, 841, 854, 1421, 1624, 1682, 1708, 1769, 2842, 2989, 3364, 3416, 3538, 5684, 5887, 5978, 6728, 7076, 11368, 11774, 11956, 12383, 14152, 23548, 23912, 24766, 41209, 47096, 49532, 51301, 82418, 86681, 99064, 102602, 164836, 173362, 205204, 329672, 346724, 359107, 410408, 693448, 718214, 1436428, 2513749, 2872856, 5027498, 10054996, 20109992]

約数ペア:

[(1, 20109992), (2, 10054996), (4, 5027498), (7, 2872856), (8, 2513749), (14, 1436428), (28, 718214), (29, 693448), (49, 410408), (56, 359107), (58, 346724), (61, 329672), (98, 205204), (116, 173362), (122, 164836), (196, 102602), (203, 99064), (232, 86681), (244, 82418), (392, 51301), (406, 49532), (427, 47096), (488, 41209), (812, 24766), (841, 23912), (854, 23548), (1421, 14152), (1624, 12383), (1682, 11956), (1708, 11774), (1769, 11368), (2842, 7076), (2989, 6728), (3364, 5978), (3416, 5887), (3538, 5684)]