2800280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 7352640

約数和(自身を除く): 4552360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 137, 140, 146, 274, 280, 292, 365, 511, 548, 584, 685, 730, 959, 1022, 1096, 1370, 1460, 1918, 2044, 2555, 2740, 2920, 3836, 4088, 4795, 5110, 5480, 7672, 9590, 10001, 10220, 19180, 20002, 20440, 38360, 40004, 50005, 70007, 80008, 100010, 140014, 200020, 280028, 350035, 400040, 560056, 700070, 1400140, 2800280]

約数ペア:

[(1, 2800280), (2, 1400140), (4, 700070), (5, 560056), (7, 400040), (8, 350035), (10, 280028), (14, 200020), (20, 140014), (28, 100010), (35, 80008), (40, 70007), (56, 50005), (70, 40004), (73, 38360), (137, 20440), (140, 20002), (146, 19180), (274, 10220), (280, 10001), (292, 9590), (365, 7672), (511, 5480), (548, 5110), (584, 4795), (685, 4088), (730, 3836), (959, 2920), (1022, 2740), (1096, 2555), (1370, 2044), (1460, 1918)]