20560855

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9298985

約数列:

[1, 5, 7, 29, 35, 47, 145, 203, 235, 329, 431, 1015, 1363, 1645, 2155, 3017, 6815, 9541, 12499, 15085, 20257, 47705, 62495, 87493, 101285, 141799, 437465, 587453, 708995, 2937265, 4112171, 20560855]

約数ペア:

[(1, 20560855), (5, 4112171), (7, 2937265), (29, 708995), (35, 587453), (47, 437465), (145, 141799), (203, 101285), (235, 87493), (329, 62495), (431, 47705), (1015, 20257), (1363, 15085), (1645, 12499), (2155, 9541), (3017, 6815)]