20281947

素因数分解:

$3^1\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1607}}^1$

素因数の和:2218

約数の個数: 16

約数和(自身を含む): 30976512

約数和(自身を除く): 10694565

約数列:

[1, 3, 7, 21, 601, 1607, 1803, 4207, 4821, 11249, 12621, 33747, 965807, 2897421, 6760649, 20281947]

約数ペア:

[(1, 20281947), (3, 6760649), (7, 2897421), (21, 965807), (601, 33747), (1607, 12621), (1803, 11249), (4207, 4821)]