20198728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2579}}^1$

素因数の和:2685

約数の個数: 32

約数和(自身を含む): 41796000

約数和(自身を除く): 21597272

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 178, 356, 712, 979, 1958, 2579, 3916, 5158, 7832, 10316, 20632, 28369, 56738, 113476, 226952, 229531, 459062, 918124, 1836248, 2524841, 5049682, 10099364, 20198728]

約数ペア:

[(1, 20198728), (2, 10099364), (4, 5049682), (8, 2524841), (11, 1836248), (22, 918124), (44, 459062), (88, 229531), (89, 226952), (178, 113476), (356, 56738), (712, 28369), (979, 20632), (1958, 10316), (2579, 7832), (3916, 5158)]