2589778820

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{157721}}^1$

素因数の和:158551

約数の個数: 24

約数和(自身を含む): 5445194328

約数和(自身を除く): 2855415508

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 16420, 157721, 315442, 630884, 788605, 1577210, 3154420, 129488941, 258977882, 517955764, 647444705, 1294889410, 2589778820]

約数ペア:

[(1, 2589778820), (2, 1294889410), (4, 647444705), (5, 517955764), (10, 258977882), (20, 129488941), (821, 3154420), (1642, 1577210), (3284, 788605), (4105, 630884), (8210, 315442), (16420, 157721)]