20989458

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:312

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35619822

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 41, 42, 51, 63, 82, 102, 119, 123, 126, 153, 238, 239, 246, 287, 306, 357, 369, 478, 574, 697, 714, 717, 738, 861, 1071, 1394, 1434, 1673, 1722, 2091, 2142, 2151, 2583, 3346, 4063, 4182, 4302, 4879, 5019, 5166, 6273, 8126, 9758, 9799, 10038, 12189, 12546, 14637, 15057, 19598, 24378, 28441, 29274, 29397, 30114, 36567, 43911, 56882, 58794, 68593, 73134, 85323, 87822, 88191, 137186, 166583, 170646, 176382, 205779, 255969, 333166, 411558, 499749, 511938, 617337, 999498, 1166081, 1234674, 1499247, 2332162, 2998494, 3498243, 6996486, 10494729, 20989458]

約数ペア:

[(1, 20989458), (2, 10494729), (3, 6996486), (6, 3498243), (7, 2998494), (9, 2332162), (14, 1499247), (17, 1234674), (18, 1166081), (21, 999498), (34, 617337), (41, 511938), (42, 499749), (51, 411558), (63, 333166), (82, 255969), (102, 205779), (119, 176382), (123, 170646), (126, 166583), (153, 137186), (238, 88191), (239, 87822), (246, 85323), (287, 73134), (306, 68593), (357, 58794), (369, 56882), (478, 43911), (574, 36567), (697, 30114), (714, 29397), (717, 29274), (738, 28441), (861, 24378), (1071, 19598), (1394, 15057), (1434, 14637), (1673, 12546), (1722, 12189), (2091, 10038), (2142, 9799), (2151, 9758), (2583, 8126), (3346, 6273), (4063, 5166), (4182, 5019), (4302, 4879)]