21518410

素因数分解:

$2^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{2621}}^1$

素因数の和:3449

約数の個数: 16

約数和(自身を含む): 38795112

約数和(自身を除く): 17276702

約数列:

[1, 2, 5, 10, 821, 1642, 2621, 4105, 5242, 8210, 13105, 26210, 2151841, 4303682, 10759205, 21518410]

約数ペア:

[(1, 21518410), (2, 10759205), (5, 4303682), (10, 2151841), (821, 26210), (1642, 13105), (2621, 8210), (4105, 5242)]