21000620172

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{1789}}^1\times {\mathrm{139747}}^1$

素因数の和:141550

約数の個数: 48

約数和(自身を含む): 56033358080

約数和(自身を除く): 35032737908

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 1789, 3578, 5367, 7156, 10734, 12523, 21468, 25046, 37569, 50092, 75138, 139747, 150276, 279494, 419241, 558988, 838482, 978229, 1676964, 1956458, 2934687, 3912916, 5869374, 11738748, 250007383, 500014766, 750022149, 1000029532, 1500044298, 1750051681, 3000088596, 3500103362, 5250155043, 7000206724, 10500310086, 21000620172]

約数ペア:

[(1, 21000620172), (2, 10500310086), (3, 7000206724), (4, 5250155043), (6, 3500103362), (7, 3000088596), (12, 1750051681), (14, 1500044298), (21, 1000029532), (28, 750022149), (42, 500014766), (84, 250007383), (1789, 11738748), (3578, 5869374), (5367, 3912916), (7156, 2934687), (10734, 1956458), (12523, 1676964), (21468, 978229), (25046, 838482), (37569, 558988), (50092, 419241), (75138, 279494), (139747, 150276)]