20379975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3529}}^1$

素因数の和:3560

約数の個数: 48

約数和(自身を含む): 42021120

約数和(自身を除く): 21641145

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 165, 175, 231, 275, 385, 525, 825, 1155, 1925, 3529, 5775, 10587, 17645, 24703, 38819, 52935, 74109, 88225, 116457, 123515, 194095, 264675, 271733, 370545, 582285, 617575, 815199, 970475, 1358665, 1852725, 2911425, 4075995, 6793325, 20379975]

約数ペア:

[(1, 20379975), (3, 6793325), (5, 4075995), (7, 2911425), (11, 1852725), (15, 1358665), (21, 970475), (25, 815199), (33, 617575), (35, 582285), (55, 370545), (75, 271733), (77, 264675), (105, 194095), (165, 123515), (175, 116457), (231, 88225), (275, 74109), (385, 52935), (525, 38819), (825, 24703), (1155, 17645), (1925, 10587), (3529, 5775)]