21271185

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2797}}^1$

素因数の和:2834

約数の個数: 36

約数和(自身を含む): 39938652

約数和(自身を除く): 18667467

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 2797, 7605, 8391, 13985, 25173, 36361, 41955, 109083, 125865, 181805, 327249, 472693, 545415, 1418079, 1636245, 2363465, 4254237, 7090395, 21271185]

約数ペア:

[(1, 21271185), (3, 7090395), (5, 4254237), (9, 2363465), (13, 1636245), (15, 1418079), (39, 545415), (45, 472693), (65, 327249), (117, 181805), (169, 125865), (195, 109083), (507, 41955), (585, 36361), (845, 25173), (1521, 13985), (2535, 8391), (2797, 7605)]