989879728

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:574

約数の個数: 80

約数和(自身を含む): 2034994752

約数和(自身を除く): 1045115024

約数列:

[1, 2, 4, 8, 16, 41, 53, 71, 82, 106, 142, 164, 212, 284, 328, 401, 424, 568, 656, 802, 848, 1136, 1604, 2173, 2911, 3208, 3763, 4346, 5822, 6416, 7526, 8692, 11644, 15052, 16441, 17384, 21253, 23288, 28471, 30104, 32882, 34768, 42506, 46576, 56942, 60208, 65764, 85012, 113884, 131528, 154283, 170024, 227768, 263056, 308566, 340048, 455536, 617132, 871373, 1167311, 1234264, 1508963, 1742746, 2334622, 2468528, 3017926, 3485492, 4669244, 6035852, 6970984, 9338488, 12071704, 13941968, 18676976, 24143408, 61867483, 123734966, 247469932, 494939864, 989879728]

約数ペア:

[(1, 989879728), (2, 494939864), (4, 247469932), (8, 123734966), (16, 61867483), (41, 24143408), (53, 18676976), (71, 13941968), (82, 12071704), (106, 9338488), (142, 6970984), (164, 6035852), (212, 4669244), (284, 3485492), (328, 3017926), (401, 2468528), (424, 2334622), (568, 1742746), (656, 1508963), (802, 1234264), (848, 1167311), (1136, 871373), (1604, 617132), (2173, 455536), (2911, 340048), (3208, 308566), (3763, 263056), (4346, 227768), (5822, 170024), (6416, 154283), (7526, 131528), (8692, 113884), (11644, 85012), (15052, 65764), (16441, 60208), (17384, 56942), (21253, 46576), (23288, 42506), (28471, 34768), (30104, 32882)]