19956988

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4077

約数の個数: 24

約数和(自身を含む): 36978480

約数和(自身を除く): 17021492

約数列:

[1, 2, 4, 29, 43, 58, 86, 116, 172, 1247, 2494, 4001, 4988, 8002, 16004, 116029, 172043, 232058, 344086, 464116, 688172, 4989247, 9978494, 19956988]

約数ペア:

[(1, 19956988), (2, 9978494), (4, 4989247), (29, 688172), (43, 464116), (58, 344086), (86, 232058), (116, 172043), (172, 116029), (1247, 16004), (2494, 8002), (4001, 4988)]