25961780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{7681}}^1$

素因数の和:7716

約数の個数: 36

約数和(自身を含む): 59043852

約数和(自身を除く): 33082072

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 7681, 15362, 30724, 38405, 76810, 99853, 153620, 199706, 399412, 499265, 998530, 1298089, 1997060, 2596178, 5192356, 6490445, 12980890, 25961780]

約数ペア:

[(1, 25961780), (2, 12980890), (4, 6490445), (5, 5192356), (10, 2596178), (13, 1997060), (20, 1298089), (26, 998530), (52, 499265), (65, 399412), (130, 199706), (169, 153620), (260, 99853), (338, 76810), (676, 38405), (845, 30724), (1690, 15362), (3380, 7681)]