19131525

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4049}}^1$

素因数の和:4075

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 21044475

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4049, 4725, 12147, 20245, 28343, 36441, 60735, 85029, 101225, 109323, 141715, 182205, 255087, 303675, 425145, 546615, 708575, 765261, 911025, 1275435, 2125725, 2733075, 3826305, 6377175, 19131525]

約数ペア:

[(1, 19131525), (3, 6377175), (5, 3826305), (7, 2733075), (9, 2125725), (15, 1275435), (21, 911025), (25, 765261), (27, 708575), (35, 546615), (45, 425145), (63, 303675), (75, 255087), (105, 182205), (135, 141715), (175, 109323), (189, 101225), (225, 85029), (315, 60735), (525, 36441), (675, 28343), (945, 20245), (1575, 12147), (4049, 4725)]