20493928

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28151}}^1$

素因数の和:28177

約数の個数: 32

約数和(自身を含む): 47295360

約数和(自身を除く): 26801432

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28151, 56302, 112604, 197057, 225208, 365963, 394114, 731926, 788228, 1463852, 1576456, 2561741, 2927704, 5123482, 10246964, 20493928]

約数ペア:

[(1, 20493928), (2, 10246964), (4, 5123482), (7, 2927704), (8, 2561741), (13, 1576456), (14, 1463852), (26, 788228), (28, 731926), (52, 394114), (56, 365963), (91, 225208), (104, 197057), (182, 112604), (364, 56302), (728, 28151)]