19678449

素因数分解:

$3^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{509}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 30697920

約数和(自身を除く): 11019471

約数列:

[1, 3, 7, 21, 49, 147, 263, 509, 789, 1527, 1841, 3563, 5523, 10689, 12887, 24941, 38661, 74823, 133867, 401601, 937069, 2811207, 6559483, 19678449]

約数ペア:

[(1, 19678449), (3, 6559483), (7, 2811207), (21, 937069), (49, 401601), (147, 133867), (263, 74823), (509, 38661), (789, 24941), (1527, 12887), (1841, 10689), (3563, 5523)]