20172542420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11332889}}^1$

素因数の和:11332987

約数の個数: 24

約数和(自身を含む): 42838324200

約数和(自身を除く): 22665781780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11332889, 22665778, 45331556, 56664445, 113328890, 226657780, 1008627121, 2017254242, 4034508484, 5043135605, 10086271210, 20172542420]

約数ペア:

[(1, 20172542420), (2, 10086271210), (4, 5043135605), (5, 4034508484), (10, 2017254242), (20, 1008627121), (89, 226657780), (178, 113328890), (356, 56664445), (445, 45331556), (890, 22665778), (1780, 11332889)]