21305878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{50971}}^1$

素因数の和:51003

約数の個数: 16

約数和(自身を含む): 36699840

約数和(自身を除く): 15393962

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 50971, 101942, 560681, 968449, 1121362, 1936898, 10652939, 21305878]

約数ペア:

[(1, 21305878), (2, 10652939), (11, 1936898), (19, 1121362), (22, 968449), (38, 560681), (209, 101942), (418, 50971)]