20769385

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6521}}^1$

素因数の和:6553

約数の個数: 24

約数和(自身を含む): 31227336

約数和(自身を除く): 10457951

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6521, 32605, 45647, 84773, 228235, 319529, 423865, 593411, 1597645, 2967055, 4153877, 20769385]

約数ペア:

[(1, 20769385), (5, 4153877), (7, 2967055), (13, 1597645), (35, 593411), (49, 423865), (65, 319529), (91, 228235), (245, 84773), (455, 45647), (637, 32605), (3185, 6521)]