20489315

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2801}}^1$

素因数の和:2843

約数の個数: 32

約数和(自身を含む): 32279040

約数和(自身を除く): 11789725

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2801, 7315, 14005, 19607, 30811, 53219, 98035, 154055, 215677, 266095, 372533, 585409, 1078385, 1862665, 2927045, 4097863, 20489315]

約数ペア:

[(1, 20489315), (5, 4097863), (7, 2927045), (11, 1862665), (19, 1078385), (35, 585409), (55, 372533), (77, 266095), (95, 215677), (133, 154055), (209, 98035), (385, 53219), (665, 30811), (1045, 19607), (1463, 14005), (2801, 7315)]