661647740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{9187}}^1$

素因数の和:9486

約数の個数: 48

約数和(自身を含む): 1501907232

約数和(自身を除く): 840259492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 554, 1108, 1385, 2770, 3601, 5540, 7202, 9187, 14404, 18005, 18374, 36010, 36748, 45935, 72020, 91870, 119431, 183740, 238862, 477724, 597155, 1194310, 2388620, 2544799, 5089598, 10179196, 12723995, 25447990, 33082387, 50895980, 66164774, 132329548, 165411935, 330823870, 661647740]

約数ペア:

[(1, 661647740), (2, 330823870), (4, 165411935), (5, 132329548), (10, 66164774), (13, 50895980), (20, 33082387), (26, 25447990), (52, 12723995), (65, 10179196), (130, 5089598), (260, 2544799), (277, 2388620), (554, 1194310), (1108, 597155), (1385, 477724), (2770, 238862), (3601, 183740), (5540, 119431), (7202, 91870), (9187, 72020), (14404, 45935), (18005, 36748), (18374, 36010)]