20207820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2423}}^1$

素因数の和:2574

約数の個数: 48

約数和(自身を含む): 57012480

約数和(自身を除く): 36804660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2423, 2780, 4170, 4846, 7269, 8340, 9692, 12115, 14538, 24230, 29076, 36345, 48460, 72690, 145380, 336797, 673594, 1010391, 1347188, 1683985, 2020782, 3367970, 4041564, 5051955, 6735940, 10103910, 20207820]

約数ペア:

[(1, 20207820), (2, 10103910), (3, 6735940), (4, 5051955), (5, 4041564), (6, 3367970), (10, 2020782), (12, 1683985), (15, 1347188), (20, 1010391), (30, 673594), (60, 336797), (139, 145380), (278, 72690), (417, 48460), (556, 36345), (695, 29076), (834, 24230), (1390, 14538), (1668, 12115), (2085, 9692), (2423, 8340), (2780, 7269), (4170, 4846)]