20680478

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{571}}^1$

素因数の和:792

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 17757922

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 199, 398, 571, 1142, 1393, 2587, 2786, 3997, 5174, 7423, 7994, 14846, 18109, 36218, 51961, 103922, 113629, 227258, 795403, 1477177, 1590806, 2954354, 10340239, 20680478]

約数ペア:

[(1, 20680478), (2, 10340239), (7, 2954354), (13, 1590806), (14, 1477177), (26, 795403), (91, 227258), (182, 113629), (199, 103922), (398, 51961), (571, 36218), (1142, 18109), (1393, 14846), (2587, 7994), (2786, 7423), (3997, 5174)]