21097020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50231}}^1$

素因数の和:50250

約数の個数: 48

約数和(自身を含む): 67511808

約数和(自身を除く): 46414788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50231, 100462, 150693, 200924, 251155, 301386, 351617, 502310, 602772, 703234, 753465, 1004620, 1054851, 1406468, 1506930, 1758085, 2109702, 3013860, 3516170, 4219404, 5274255, 7032340, 10548510, 21097020]

約数ペア:

[(1, 21097020), (2, 10548510), (3, 7032340), (4, 5274255), (5, 4219404), (6, 3516170), (7, 3013860), (10, 2109702), (12, 1758085), (14, 1506930), (15, 1406468), (20, 1054851), (21, 1004620), (28, 753465), (30, 703234), (35, 602772), (42, 502310), (60, 351617), (70, 301386), (84, 251155), (105, 200924), (140, 150693), (210, 100462), (420, 50231)]