20973891

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{7829}}^1$

素因数の和:7898

約数の個数: 16

約数和(自身を含む): 30067200

約数和(自身を除く): 9093309

約数列:

[1, 3, 19, 47, 57, 141, 893, 2679, 7829, 23487, 148751, 367963, 446253, 1103889, 6991297, 20973891]

約数ペア:

[(1, 20973891), (3, 6991297), (19, 1103889), (47, 446253), (57, 367963), (141, 148751), (893, 23487), (2679, 7829)]