19177720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5387}}^1$

素因数の和:5487

約数の個数: 32

約数和(自身を含む): 43642800

約数和(自身を除く): 24465080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5387, 10774, 21548, 26935, 43096, 53870, 107740, 215480, 479443, 958886, 1917772, 2397215, 3835544, 4794430, 9588860, 19177720]

約数ペア:

[(1, 19177720), (2, 9588860), (4, 4794430), (5, 3835544), (8, 2397215), (10, 1917772), (20, 958886), (40, 479443), (89, 215480), (178, 107740), (356, 53870), (445, 43096), (712, 26935), (890, 21548), (1780, 10774), (3560, 5387)]