20008349375

素因数分解:

$5^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{977}}^1$

素因数の和:1186

約数の個数: 80

約数和(自身を含む): 29721686016

約数和(自身を除く): 9713336641

約数列:

[1, 5, 7, 25, 31, 35, 125, 151, 155, 175, 217, 625, 755, 775, 875, 977, 1057, 1085, 3775, 3875, 4375, 4681, 4885, 5285, 5425, 6839, 18875, 19375, 23405, 24425, 26425, 27125, 30287, 32767, 34195, 94375, 117025, 122125, 132125, 135625, 147527, 151435, 163835, 170975, 212009, 585125, 610625, 660625, 737635, 757175, 819175, 854875, 1032689, 1060045, 2925625, 3688175, 3785875, 4095875, 4274375, 4573337, 5163445, 5300225, 18440875, 18929375, 20479375, 22866685, 25817225, 26501125, 32013359, 92204375, 114333425, 129086125, 132505625, 160066795, 571667125, 645430625, 800333975, 2858335625, 4001669875, 20008349375]

約数ペア:

[(1, 20008349375), (5, 4001669875), (7, 2858335625), (25, 800333975), (31, 645430625), (35, 571667125), (125, 160066795), (151, 132505625), (155, 129086125), (175, 114333425), (217, 92204375), (625, 32013359), (755, 26501125), (775, 25817225), (875, 22866685), (977, 20479375), (1057, 18929375), (1085, 18440875), (3775, 5300225), (3875, 5163445), (4375, 4573337), (4681, 4274375), (4885, 4095875), (5285, 3785875), (5425, 3688175), (6839, 2925625), (18875, 1060045), (19375, 1032689), (23405, 854875), (24425, 819175), (26425, 757175), (27125, 737635), (30287, 660625), (32767, 610625), (34195, 585125), (94375, 212009), (117025, 170975), (122125, 163835), (132125, 151435), (135625, 147527)]