1987540975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{937}}^1$

素因数の和:1025

約数の個数: 96

約数和(自身を含む): 3215794176

約数和(自身を除く): 1228253201

約数列:

[1, 5, 7, 17, 23, 25, 31, 35, 85, 115, 119, 155, 161, 175, 217, 391, 425, 527, 575, 595, 713, 775, 805, 937, 1085, 1955, 2635, 2737, 2975, 3565, 3689, 4025, 4685, 4991, 5425, 6559, 9775, 12121, 13175, 13685, 15929, 17825, 18445, 21551, 23425, 24955, 29047, 32795, 60605, 68425, 79645, 84847, 92225, 107755, 111503, 124775, 145235, 150857, 163975, 203329, 303025, 366367, 398225, 424235, 493799, 538775, 557515, 668081, 726175, 754285, 1016645, 1831835, 2121175, 2468995, 2564569, 2787575, 3340405, 3456593, 3771425, 4676567, 5083225, 9159175, 11357377, 12344975, 12822845, 16702025, 17282965, 23382835, 56786885, 64114225, 79501639, 86414825, 116914175, 283934425, 397508195, 1987540975]

約数ペア:

[(1, 1987540975), (5, 397508195), (7, 283934425), (17, 116914175), (23, 86414825), (25, 79501639), (31, 64114225), (35, 56786885), (85, 23382835), (115, 17282965), (119, 16702025), (155, 12822845), (161, 12344975), (175, 11357377), (217, 9159175), (391, 5083225), (425, 4676567), (527, 3771425), (575, 3456593), (595, 3340405), (713, 2787575), (775, 2564569), (805, 2468995), (937, 2121175), (1085, 1831835), (1955, 1016645), (2635, 754285), (2737, 726175), (2975, 668081), (3565, 557515), (3689, 538775), (4025, 493799), (4685, 424235), (4991, 398225), (5425, 366367), (6559, 303025), (9775, 203329), (12121, 163975), (13175, 150857), (13685, 145235), (15929, 124775), (17825, 111503), (18445, 107755), (21551, 92225), (23425, 84847), (24955, 79645), (29047, 68425), (32795, 60605)]