20378750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:183

約数の個数: 80

約数和(自身を含む): 46560096

約数和(自身を除く): 26181346

約数列:

[1, 2, 5, 7, 10, 14, 17, 25, 34, 35, 50, 70, 85, 119, 125, 137, 170, 175, 238, 250, 274, 350, 425, 595, 625, 685, 850, 875, 959, 1190, 1250, 1370, 1750, 1918, 2125, 2329, 2975, 3425, 4250, 4375, 4658, 4795, 5950, 6850, 8750, 9590, 10625, 11645, 14875, 16303, 17125, 21250, 23290, 23975, 29750, 32606, 34250, 47950, 58225, 74375, 81515, 85625, 116450, 119875, 148750, 163030, 171250, 239750, 291125, 407575, 582250, 599375, 815150, 1198750, 1455625, 2037875, 2911250, 4075750, 10189375, 20378750]

約数ペア:

[(1, 20378750), (2, 10189375), (5, 4075750), (7, 2911250), (10, 2037875), (14, 1455625), (17, 1198750), (25, 815150), (34, 599375), (35, 582250), (50, 407575), (70, 291125), (85, 239750), (119, 171250), (125, 163030), (137, 148750), (170, 119875), (175, 116450), (238, 85625), (250, 81515), (274, 74375), (350, 58225), (425, 47950), (595, 34250), (625, 32606), (685, 29750), (850, 23975), (875, 23290), (959, 21250), (1190, 17125), (1250, 16303), (1370, 14875), (1750, 11645), (1918, 10625), (2125, 9590), (2329, 8750), (2975, 6850), (3425, 5950), (4250, 4795), (4375, 4658)]