21513345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{619}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 39521280

約数和(自身を除く): 18007935

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 331, 619, 993, 1655, 1857, 2317, 3095, 4333, 4965, 6951, 9285, 11585, 12999, 21665, 34755, 64995, 204889, 614667, 1024445, 1434223, 3073335, 4302669, 7171115, 21513345]

約数ペア:

[(1, 21513345), (3, 7171115), (5, 4302669), (7, 3073335), (15, 1434223), (21, 1024445), (35, 614667), (105, 204889), (331, 64995), (619, 34755), (993, 21665), (1655, 12999), (1857, 11585), (2317, 9285), (3095, 6951), (4333, 4965)]