20457965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19577}}^1$

素因数の和:19612

約数の個数: 16

約数和(自身を含む): 28192320

約数和(自身を除く): 7734355

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19577, 97885, 215347, 371963, 1076735, 1859815, 4091593, 20457965]

約数ペア:

[(1, 20457965), (5, 4091593), (11, 1859815), (19, 1076735), (55, 371963), (95, 215347), (209, 97885), (1045, 19577)]