19868360

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5581}}^1$

素因数の和:5681

約数の個数: 32

約数和(自身を含む): 45214200

約数和(自身を除く): 25345840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5581, 11162, 22324, 27905, 44648, 55810, 111620, 223240, 496709, 993418, 1986836, 2483545, 3973672, 4967090, 9934180, 19868360]

約数ペア:

[(1, 19868360), (2, 9934180), (4, 4967090), (5, 3973672), (8, 2483545), (10, 1986836), (20, 993418), (40, 496709), (89, 223240), (178, 111620), (356, 55810), (445, 44648), (712, 27905), (890, 22324), (1780, 11162), (3560, 5581)]