20417488

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 50135680

約数和(自身を除く): 29718192

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 37, 52, 56, 74, 91, 104, 112, 148, 182, 208, 259, 296, 364, 379, 481, 518, 592, 728, 758, 962, 1036, 1456, 1516, 1924, 2072, 2653, 3032, 3367, 3848, 4144, 4927, 5306, 6064, 6734, 7696, 9854, 10612, 13468, 14023, 19708, 21224, 26936, 28046, 34489, 39416, 42448, 53872, 56092, 68978, 78832, 98161, 112184, 137956, 182299, 196322, 224368, 275912, 364598, 392644, 551824, 729196, 785288, 1276093, 1458392, 1570576, 2552186, 2916784, 5104372, 10208744, 20417488]

約数ペア:

[(1, 20417488), (2, 10208744), (4, 5104372), (7, 2916784), (8, 2552186), (13, 1570576), (14, 1458392), (16, 1276093), (26, 785288), (28, 729196), (37, 551824), (52, 392644), (56, 364598), (74, 275912), (91, 224368), (104, 196322), (112, 182299), (148, 137956), (182, 112184), (208, 98161), (259, 78832), (296, 68978), (364, 56092), (379, 53872), (481, 42448), (518, 39416), (592, 34489), (728, 28046), (758, 26936), (962, 21224), (1036, 19708), (1456, 14023), (1516, 13468), (1924, 10612), (2072, 9854), (2653, 7696), (3032, 6734), (3367, 6064), (3848, 5306), (4144, 4927)]