21302260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21737}}^1$

素因数の和:21760

約数の個数: 36

約数和(自身を含む): 52040772

約数和(自身を除く): 30738512

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21737, 43474, 86948, 108685, 152159, 217370, 304318, 434740, 608636, 760795, 1065113, 1521590, 2130226, 3043180, 4260452, 5325565, 10651130, 21302260]

約数ペア:

[(1, 21302260), (2, 10651130), (4, 5325565), (5, 4260452), (7, 3043180), (10, 2130226), (14, 1521590), (20, 1065113), (28, 760795), (35, 608636), (49, 434740), (70, 304318), (98, 217370), (140, 152159), (196, 108685), (245, 86948), (490, 43474), (980, 21737)]