66980000

素因数分解:

$2^5\times 5^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:244

約数の個数: 120

約数和(自身を含む): 175359492

約数和(自身を除く): 108379492

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 68, 80, 85, 100, 125, 136, 160, 170, 197, 200, 250, 272, 340, 394, 400, 425, 500, 544, 625, 680, 788, 800, 850, 985, 1000, 1250, 1360, 1576, 1700, 1970, 2000, 2125, 2500, 2720, 3152, 3349, 3400, 3940, 4000, 4250, 4925, 5000, 6304, 6698, 6800, 7880, 8500, 9850, 10000, 10625, 13396, 13600, 15760, 16745, 17000, 19700, 20000, 21250, 24625, 26792, 31520, 33490, 34000, 39400, 42500, 49250, 53584, 66980, 68000, 78800, 83725, 85000, 98500, 107168, 123125, 133960, 157600, 167450, 170000, 197000, 246250, 267920, 334900, 340000, 394000, 418625, 492500, 535840, 669800, 788000, 837250, 985000, 1339600, 1674500, 1970000, 2093125, 2679200, 3349000, 3940000, 4186250, 6698000, 8372500, 13396000, 16745000, 33490000, 66980000]

約数ペア:

[(1, 66980000), (2, 33490000), (4, 16745000), (5, 13396000), (8, 8372500), (10, 6698000), (16, 4186250), (17, 3940000), (20, 3349000), (25, 2679200), (32, 2093125), (34, 1970000), (40, 1674500), (50, 1339600), (68, 985000), (80, 837250), (85, 788000), (100, 669800), (125, 535840), (136, 492500), (160, 418625), (170, 394000), (197, 340000), (200, 334900), (250, 267920), (272, 246250), (340, 197000), (394, 170000), (400, 167450), (425, 157600), (500, 133960), (544, 123125), (625, 107168), (680, 98500), (788, 85000), (800, 83725), (850, 78800), (985, 68000), (1000, 66980), (1250, 53584), (1360, 49250), (1576, 42500), (1700, 39400), (1970, 34000), (2000, 33490), (2125, 31520), (2500, 26792), (2720, 24625), (3152, 21250), (3349, 20000), (3400, 19700), (3940, 17000), (4000, 16745), (4250, 15760), (4925, 13600), (5000, 13396), (6304, 10625), (6698, 10000), (6800, 9850), (7880, 8500)]