21994497

素因数分解:

$3^4\times 7^1\times {\mathrm{38791}}^1$

素因数の和:38810

約数の個数: 20

約数和(自身を含む): 37550656

約数和(自身を除く): 15556159

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38791, 116373, 271537, 349119, 814611, 1047357, 2443833, 3142071, 7331499, 21994497]

約数ペア:

[(1, 21994497), (3, 7331499), (7, 3142071), (9, 2443833), (21, 1047357), (27, 814611), (63, 349119), (81, 271537), (189, 116373), (567, 38791)]