21935355

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 40318560

約数和(自身を除く): 18383205

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 169, 195, 221, 255, 507, 509, 663, 845, 1105, 1527, 2535, 2545, 2873, 3315, 6617, 7635, 8619, 8653, 14365, 19851, 25959, 33085, 43095, 43265, 86021, 99255, 112489, 129795, 258063, 337467, 430105, 562445, 1290315, 1462357, 1687335, 4387071, 7311785, 21935355]

約数ペア:

[(1, 21935355), (3, 7311785), (5, 4387071), (13, 1687335), (15, 1462357), (17, 1290315), (39, 562445), (51, 430105), (65, 337467), (85, 258063), (169, 129795), (195, 112489), (221, 99255), (255, 86021), (507, 43265), (509, 43095), (663, 33085), (845, 25959), (1105, 19851), (1527, 14365), (2535, 8653), (2545, 8619), (2873, 7635), (3315, 6617)]