2801720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{787}}^1$

素因数の和:887

約数の個数: 32

約数和(自身を含む): 6382800

約数和(自身を除く): 3581080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 787, 890, 1574, 1780, 3148, 3560, 3935, 6296, 7870, 15740, 31480, 70043, 140086, 280172, 350215, 560344, 700430, 1400860, 2801720]

約数ペア:

[(1, 2801720), (2, 1400860), (4, 700430), (5, 560344), (8, 350215), (10, 280172), (20, 140086), (40, 70043), (89, 31480), (178, 15740), (356, 7870), (445, 6296), (712, 3935), (787, 3560), (890, 3148), (1574, 1780)]