20448484

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{19}}^2$

素因数の和:90

約数の個数: 81

約数和(自身を含む): 46669833

約数和(自身を除く): 26221349

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 49, 68, 76, 98, 119, 133, 196, 238, 266, 289, 323, 361, 476, 532, 578, 646, 722, 833, 931, 1156, 1292, 1444, 1666, 1862, 2023, 2261, 2527, 3332, 3724, 4046, 4522, 5054, 5491, 6137, 8092, 9044, 10108, 10982, 12274, 14161, 15827, 17689, 21964, 24548, 28322, 31654, 35378, 38437, 42959, 56644, 63308, 70756, 76874, 85918, 104329, 153748, 171836, 208658, 269059, 300713, 417316, 538118, 601426, 730303, 1076236, 1202852, 1460606, 2921212, 5112121, 10224242, 20448484]

約数ペア:

[(1, 20448484), (2, 10224242), (4, 5112121), (7, 2921212), (14, 1460606), (17, 1202852), (19, 1076236), (28, 730303), (34, 601426), (38, 538118), (49, 417316), (68, 300713), (76, 269059), (98, 208658), (119, 171836), (133, 153748), (196, 104329), (238, 85918), (266, 76874), (289, 70756), (323, 63308), (361, 56644), (476, 42959), (532, 38437), (578, 35378), (646, 31654), (722, 28322), (833, 24548), (931, 21964), (1156, 17689), (1292, 15827), (1444, 14161), (1666, 12274), (1862, 10982), (2023, 10108), (2261, 9044), (2527, 8092), (3332, 6137), (3724, 5491), (4046, 5054)]