19807947

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 29405376

約数和(自身を除く): 9597429

約数列:

[1, 3, 9, 67, 107, 201, 307, 321, 603, 921, 963, 2763, 7169, 20569, 21507, 32849, 61707, 64521, 98547, 185121, 295641, 2200883, 6602649, 19807947]

約数ペア:

[(1, 19807947), (3, 6602649), (9, 2200883), (67, 295641), (107, 185121), (201, 98547), (307, 64521), (321, 61707), (603, 32849), (921, 21507), (963, 20569), (2763, 7169)]