20004001005

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{394673}}^1$

素因数の和:394821

約数の個数: 32

約数和(自身を含む): 33342059520

約数和(自身を除く): 13338058515

約数列:

[1, 3, 5, 15, 31, 93, 109, 155, 327, 465, 545, 1635, 3379, 10137, 16895, 50685, 394673, 1184019, 1973365, 5920095, 12234863, 36704589, 43019357, 61174315, 129058071, 183522945, 215096785, 645290355, 1333600067, 4000800201, 6668000335, 20004001005]

約数ペア:

[(1, 20004001005), (3, 6668000335), (5, 4000800201), (15, 1333600067), (31, 645290355), (93, 215096785), (109, 183522945), (155, 129058071), (327, 61174315), (465, 43019357), (545, 36704589), (1635, 12234863), (3379, 5920095), (10137, 1973365), (16895, 1184019), (50685, 394673)]