20520890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3671}}^1$

素因数の和:3734

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 20194246

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3671, 5590, 7342, 18355, 36710, 47723, 95446, 157853, 238615, 315706, 477230, 789265, 1578530, 2052089, 4104178, 10260445, 20520890]

約数ペア:

[(1, 20520890), (2, 10260445), (5, 4104178), (10, 2052089), (13, 1578530), (26, 789265), (43, 477230), (65, 315706), (86, 238615), (130, 157853), (215, 95446), (430, 47723), (559, 36710), (1118, 18355), (2795, 7342), (3671, 5590)]