20129447

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:494

約数の個数: 16

約数和(自身を含む): 22579200

約数和(自身を除く): 2449753

約数列:

[1, 13, 31, 199, 251, 403, 2587, 3263, 6169, 7781, 49949, 80197, 101153, 649337, 1548419, 20129447]

約数ペア:

[(1, 20129447), (13, 1548419), (31, 649337), (199, 101153), (251, 80197), (403, 49949), (2587, 7781), (3263, 6169)]