20016560

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1657}}^1$

素因数の和:1821

約数の個数: 40

約数和(自身を含む): 46874976

約数和(自身を除く): 26858416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1657, 2416, 3020, 3314, 6040, 6628, 8285, 12080, 13256, 16570, 26512, 33140, 66280, 132560, 250207, 500414, 1000828, 1251035, 2001656, 2502070, 4003312, 5004140, 10008280, 20016560]

約数ペア:

[(1, 20016560), (2, 10008280), (4, 5004140), (5, 4003312), (8, 2502070), (10, 2001656), (16, 1251035), (20, 1000828), (40, 500414), (80, 250207), (151, 132560), (302, 66280), (604, 33140), (755, 26512), (1208, 16570), (1510, 13256), (1657, 12080), (2416, 8285), (3020, 6628), (3314, 6040)]