12980440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29501}}^1$

素因数の和:29523

約数の個数: 32

約数和(自身を含む): 31862160

約数和(自身を除く): 18881720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 29501, 59002, 118004, 147505, 236008, 295010, 324511, 590020, 649022, 1180040, 1298044, 1622555, 2596088, 3245110, 6490220, 12980440]

約数ペア:

[(1, 12980440), (2, 6490220), (4, 3245110), (5, 2596088), (8, 1622555), (10, 1298044), (11, 1180040), (20, 649022), (22, 590020), (40, 324511), (44, 295010), (55, 236008), (88, 147505), (110, 118004), (220, 59002), (440, 29501)]