18785587185

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{309457}}^1$

素因数の和:309558

約数の個数: 48

約数和(自身を含む): 34758322560

約数和(自身を除く): 15972735375

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 71, 95, 171, 213, 285, 355, 639, 855, 1065, 1349, 3195, 4047, 6745, 12141, 20235, 60705, 309457, 928371, 1547285, 2785113, 4641855, 5879683, 13925565, 17639049, 21971447, 29398415, 52917147, 65914341, 88195245, 109857235, 197743023, 264585735, 329571705, 417457493, 988715115, 1252372479, 2087287465, 3757117437, 6261862395, 18785587185]

約数ペア:

[(1, 18785587185), (3, 6261862395), (5, 3757117437), (9, 2087287465), (15, 1252372479), (19, 988715115), (45, 417457493), (57, 329571705), (71, 264585735), (95, 197743023), (171, 109857235), (213, 88195245), (285, 65914341), (355, 52917147), (639, 29398415), (855, 21971447), (1065, 17639049), (1349, 13925565), (3195, 5879683), (4047, 4641855), (6745, 2785113), (12141, 1547285), (20235, 928371), (60705, 309457)]