20642538

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{491489}}^1$

素因数の和:491501

約数の個数: 16

約数和(自身を含む): 47183040

約数和(自身を除く): 26540502

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 491489, 982978, 1474467, 2948934, 3440423, 6880846, 10321269, 20642538]

約数ペア:

[(1, 20642538), (2, 10321269), (3, 6880846), (6, 3440423), (7, 2948934), (14, 1474467), (21, 982978), (42, 491489)]