20993505

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 36422400

約数和(自身を除く): 15428895

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 199, 541, 597, 995, 1623, 2587, 2705, 2985, 7033, 7761, 8115, 12935, 21099, 35165, 38805, 105495, 107659, 322977, 538295, 1399567, 1614885, 4198701, 6997835, 20993505]

約数ペア:

[(1, 20993505), (3, 6997835), (5, 4198701), (13, 1614885), (15, 1399567), (39, 538295), (65, 322977), (195, 107659), (199, 105495), (541, 38805), (597, 35165), (995, 21099), (1623, 12935), (2587, 8115), (2705, 7761), (2985, 7033)]