1280920000

素因数分解:

$2^6\times 5^4\times {\mathrm{31}}^1\times {\mathrm{1033}}^1$

素因数の和:1096

約数の個数: 140

約数和(自身を含む): 3281899456

約数和(自身を除く): 2000979456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 155, 160, 200, 248, 250, 310, 320, 400, 496, 500, 620, 625, 775, 800, 992, 1000, 1033, 1240, 1250, 1550, 1600, 1984, 2000, 2066, 2480, 2500, 3100, 3875, 4000, 4132, 4960, 5000, 5165, 6200, 7750, 8000, 8264, 9920, 10000, 10330, 12400, 15500, 16528, 19375, 20000, 20660, 24800, 25825, 31000, 32023, 33056, 38750, 40000, 41320, 49600, 51650, 62000, 64046, 66112, 77500, 82640, 103300, 124000, 128092, 129125, 155000, 160115, 165280, 206600, 248000, 256184, 258250, 310000, 320230, 330560, 413200, 512368, 516500, 620000, 640460, 645625, 800575, 826400, 1024736, 1033000, 1240000, 1280920, 1291250, 1601150, 1652800, 2049472, 2066000, 2561840, 2582500, 3202300, 4002875, 4132000, 5123680, 5165000, 6404600, 8005750, 8264000, 10247360, 10330000, 12809200, 16011500, 20014375, 20660000, 25618400, 32023000, 40028750, 41320000, 51236800, 64046000, 80057500, 128092000, 160115000, 256184000, 320230000, 640460000, 1280920000]

約数ペア:

[(1, 1280920000), (2, 640460000), (4, 320230000), (5, 256184000), (8, 160115000), (10, 128092000), (16, 80057500), (20, 64046000), (25, 51236800), (31, 41320000), (32, 40028750), (40, 32023000), (50, 25618400), (62, 20660000), (64, 20014375), (80, 16011500), (100, 12809200), (124, 10330000), (125, 10247360), (155, 8264000), (160, 8005750), (200, 6404600), (248, 5165000), (250, 5123680), (310, 4132000), (320, 4002875), (400, 3202300), (496, 2582500), (500, 2561840), (620, 2066000), (625, 2049472), (775, 1652800), (800, 1601150), (992, 1291250), (1000, 1280920), (1033, 1240000), (1240, 1033000), (1250, 1024736), (1550, 826400), (1600, 800575), (1984, 645625), (2000, 640460), (2066, 620000), (2480, 516500), (2500, 512368), (3100, 413200), (3875, 330560), (4000, 320230), (4132, 310000), (4960, 258250), (5000, 256184), (5165, 248000), (6200, 206600), (7750, 165280), (8000, 160115), (8264, 155000), (9920, 129125), (10000, 128092), (10330, 124000), (12400, 103300), (15500, 82640), (16528, 77500), (19375, 66112), (20000, 64046), (20660, 62000), (24800, 51650), (25825, 49600), (31000, 41320), (32023, 40000), (33056, 38750)]