6401840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1861}}^1$

素因数の和:1917

約数の個数: 40

約数和(自身を含む): 15238608

約数和(自身を除く): 8836768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 1861, 3440, 3722, 7444, 9305, 14888, 18610, 29776, 37220, 74440, 80023, 148880, 160046, 320092, 400115, 640184, 800230, 1280368, 1600460, 3200920, 6401840]

約数ペア:

[(1, 6401840), (2, 3200920), (4, 1600460), (5, 1280368), (8, 800230), (10, 640184), (16, 400115), (20, 320092), (40, 160046), (43, 148880), (80, 80023), (86, 74440), (172, 37220), (215, 29776), (344, 18610), (430, 14888), (688, 9305), (860, 7444), (1720, 3722), (1861, 3440)]