80978000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2131}}^1$

素因数の和:2173

約数の個数: 80

約数和(自身を含む): 206207040

約数和(自身を除く): 125229040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 125, 152, 190, 200, 250, 304, 380, 400, 475, 500, 760, 950, 1000, 1520, 1900, 2000, 2131, 2375, 3800, 4262, 4750, 7600, 8524, 9500, 10655, 17048, 19000, 21310, 34096, 38000, 40489, 42620, 53275, 80978, 85240, 106550, 161956, 170480, 202445, 213100, 266375, 323912, 404890, 426200, 532750, 647824, 809780, 852400, 1012225, 1065500, 1619560, 2024450, 2131000, 3239120, 4048900, 4262000, 5061125, 8097800, 10122250, 16195600, 20244500, 40489000, 80978000]

約数ペア:

[(1, 80978000), (2, 40489000), (4, 20244500), (5, 16195600), (8, 10122250), (10, 8097800), (16, 5061125), (19, 4262000), (20, 4048900), (25, 3239120), (38, 2131000), (40, 2024450), (50, 1619560), (76, 1065500), (80, 1012225), (95, 852400), (100, 809780), (125, 647824), (152, 532750), (190, 426200), (200, 404890), (250, 323912), (304, 266375), (380, 213100), (400, 202445), (475, 170480), (500, 161956), (760, 106550), (950, 85240), (1000, 80978), (1520, 53275), (1900, 42620), (2000, 40489), (2131, 38000), (2375, 34096), (3800, 21310), (4262, 19000), (4750, 17048), (7600, 10655), (8524, 9500)]