261907420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{147139}}^1$

素因数の和:147237

約数の個数: 24

約数和(自身を含む): 556189200

約数和(自身を除く): 294281780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 147139, 294278, 588556, 735695, 1471390, 2942780, 13095371, 26190742, 52381484, 65476855, 130953710, 261907420]

約数ペア:

[(1, 261907420), (2, 130953710), (4, 65476855), (5, 52381484), (10, 26190742), (20, 13095371), (89, 2942780), (178, 1471390), (356, 735695), (445, 588556), (890, 294278), (1780, 147139)]