12820040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1109}}^1$

素因数の和:1154

約数の個数: 48

約数和(自身を含む): 30669300

約数和(自身を除く): 17849260

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1109, 1156, 1445, 2218, 2312, 2890, 4436, 5545, 5780, 8872, 11090, 11560, 18853, 22180, 37706, 44360, 75412, 94265, 150824, 188530, 320501, 377060, 641002, 754120, 1282004, 1602505, 2564008, 3205010, 6410020, 12820040]

約数ペア:

[(1, 12820040), (2, 6410020), (4, 3205010), (5, 2564008), (8, 1602505), (10, 1282004), (17, 754120), (20, 641002), (34, 377060), (40, 320501), (68, 188530), (85, 150824), (136, 94265), (170, 75412), (289, 44360), (340, 37706), (578, 22180), (680, 18853), (1109, 11560), (1156, 11090), (1445, 8872), (2218, 5780), (2312, 5545), (2890, 4436)]