20590960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1523}}^1$

素因数の和:1562

約数の個数: 60

約数和(自身を含む): 51873912

約数和(自身を除く): 31282952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1523, 1690, 2704, 3046, 3380, 6092, 6760, 7615, 12184, 13520, 15230, 19799, 24368, 30460, 39598, 60920, 79196, 98995, 121840, 158392, 197990, 257387, 316784, 395980, 514774, 791960, 1029548, 1286935, 1583920, 2059096, 2573870, 4118192, 5147740, 10295480, 20590960]

約数ペア:

[(1, 20590960), (2, 10295480), (4, 5147740), (5, 4118192), (8, 2573870), (10, 2059096), (13, 1583920), (16, 1286935), (20, 1029548), (26, 791960), (40, 514774), (52, 395980), (65, 316784), (80, 257387), (104, 197990), (130, 158392), (169, 121840), (208, 98995), (260, 79196), (338, 60920), (520, 39598), (676, 30460), (845, 24368), (1040, 19799), (1352, 15230), (1523, 13520), (1690, 12184), (2704, 7615), (3046, 6760), (3380, 6092)]