21145065

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 35043840

約数和(自身を除く): 13898775

約数列:

[1, 3, 5, 15, 47, 89, 141, 235, 267, 337, 445, 705, 1011, 1335, 1685, 4183, 5055, 12549, 15839, 20915, 29993, 47517, 62745, 79195, 89979, 149965, 237585, 449895, 1409671, 4229013, 7048355, 21145065]

約数ペア:

[(1, 21145065), (3, 7048355), (5, 4229013), (15, 1409671), (47, 449895), (89, 237585), (141, 149965), (235, 89979), (267, 79195), (337, 62745), (445, 47517), (705, 29993), (1011, 20915), (1335, 15839), (1685, 12549), (4183, 5055)]