31781464

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2137}}^1$

素因数の和:2180

約数の個数: 48

約数和(自身を含む): 70425720

約数和(自身を除く): 38644256

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1352, 1859, 2137, 3718, 4274, 7436, 8548, 14872, 17096, 23507, 27781, 47014, 55562, 94028, 111124, 188056, 222248, 305591, 361153, 611182, 722306, 1222364, 1444612, 2444728, 2889224, 3972683, 7945366, 15890732, 31781464]

約数ペア:

[(1, 31781464), (2, 15890732), (4, 7945366), (8, 3972683), (11, 2889224), (13, 2444728), (22, 1444612), (26, 1222364), (44, 722306), (52, 611182), (88, 361153), (104, 305591), (143, 222248), (169, 188056), (286, 111124), (338, 94028), (572, 55562), (676, 47014), (1144, 27781), (1352, 23507), (1859, 17096), (2137, 14872), (3718, 8548), (4274, 7436)]