1321778000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{21319}}^1$

素因数の和:21373

約数の個数: 80

約数和(自身を含む): 3299312640

約数和(自身を除く): 1977534640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 400, 496, 500, 620, 775, 1000, 1240, 1550, 2000, 2480, 3100, 3875, 6200, 7750, 12400, 15500, 21319, 31000, 42638, 62000, 85276, 106595, 170552, 213190, 341104, 426380, 532975, 660889, 852760, 1065950, 1321778, 1705520, 2131900, 2643556, 2664875, 3304445, 4263800, 5287112, 5329750, 6608890, 8527600, 10574224, 10659500, 13217780, 16522225, 21319000, 26435560, 33044450, 42638000, 52871120, 66088900, 82611125, 132177800, 165222250, 264355600, 330444500, 660889000, 1321778000]

約数ペア:

[(1, 1321778000), (2, 660889000), (4, 330444500), (5, 264355600), (8, 165222250), (10, 132177800), (16, 82611125), (20, 66088900), (25, 52871120), (31, 42638000), (40, 33044450), (50, 26435560), (62, 21319000), (80, 16522225), (100, 13217780), (124, 10659500), (125, 10574224), (155, 8527600), (200, 6608890), (248, 5329750), (250, 5287112), (310, 4263800), (400, 3304445), (496, 2664875), (500, 2643556), (620, 2131900), (775, 1705520), (1000, 1321778), (1240, 1065950), (1550, 852760), (2000, 660889), (2480, 532975), (3100, 426380), (3875, 341104), (6200, 213190), (7750, 170552), (12400, 106595), (15500, 85276), (21319, 62000), (31000, 42638)]