20775615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 40974336

約数和(自身を除く): 20198721

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 103, 105, 113, 119, 255, 309, 339, 357, 515, 565, 595, 721, 791, 1545, 1695, 1751, 1785, 1921, 2163, 2373, 3605, 3955, 5253, 5763, 8755, 9605, 10815, 11639, 11865, 12257, 13447, 26265, 28815, 34917, 36771, 40341, 58195, 61285, 67235, 81473, 174585, 183855, 197863, 201705, 244419, 407365, 593589, 989315, 1222095, 1385041, 2967945, 4155123, 6925205, 20775615]

約数ペア:

[(1, 20775615), (3, 6925205), (5, 4155123), (7, 2967945), (15, 1385041), (17, 1222095), (21, 989315), (35, 593589), (51, 407365), (85, 244419), (103, 201705), (105, 197863), (113, 183855), (119, 174585), (255, 81473), (309, 67235), (339, 61285), (357, 58195), (515, 40341), (565, 36771), (595, 34917), (721, 28815), (791, 26265), (1545, 13447), (1695, 12257), (1751, 11865), (1785, 11639), (1921, 10815), (2163, 9605), (2373, 8755), (3605, 5763), (3955, 5253)]