21135195

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3331}}^1$

素因数の和:3392

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 17249445

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 135, 141, 235, 423, 705, 1269, 2115, 3331, 6345, 9993, 16655, 29979, 49965, 89937, 149895, 156557, 449685, 469671, 782785, 1409013, 2348355, 4227039, 7045065, 21135195]

約数ペア:

[(1, 21135195), (3, 7045065), (5, 4227039), (9, 2348355), (15, 1409013), (27, 782785), (45, 469671), (47, 449685), (135, 156557), (141, 149895), (235, 89937), (423, 49965), (705, 29979), (1269, 16655), (2115, 9993), (3331, 6345)]