638863695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{2141}}^1$

素因数の和:2520

約数の個数: 48

約数和(自身を含む): 1169532000

約数和(自身を除く): 530668305

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 349, 855, 1047, 1745, 2141, 3141, 5235, 6423, 6631, 10705, 15705, 19269, 19893, 32115, 33155, 40679, 59679, 96345, 99465, 122037, 203395, 298395, 366111, 610185, 747209, 1830555, 2241627, 3736045, 6724881, 11208135, 14196971, 33624405, 42590913, 70984855, 127772739, 212954565, 638863695]

約数ペア:

[(1, 638863695), (3, 212954565), (5, 127772739), (9, 70984855), (15, 42590913), (19, 33624405), (45, 14196971), (57, 11208135), (95, 6724881), (171, 3736045), (285, 2241627), (349, 1830555), (855, 747209), (1047, 610185), (1745, 366111), (2141, 298395), (3141, 203395), (5235, 122037), (6423, 99465), (6631, 96345), (10705, 59679), (15705, 40679), (19269, 33155), (19893, 32115)]