21059780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150427}}^1$

素因数の和:150443

約数の個数: 24

約数和(自身を含む): 50543808

約数和(自身を除く): 29484028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150427, 300854, 601708, 752135, 1052989, 1504270, 2105978, 3008540, 4211956, 5264945, 10529890, 21059780]

約数ペア:

[(1, 21059780), (2, 10529890), (4, 5264945), (5, 4211956), (7, 3008540), (10, 2105978), (14, 1504270), (20, 1052989), (28, 752135), (35, 601708), (70, 300854), (140, 150427)]