81581580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{50359}}^1$

素因数の和:50380

約数の個数: 60

約数和(自身を含む): 255929520

約数和(自身を除く): 174347940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 50359, 100718, 151077, 201436, 251795, 302154, 453231, 503590, 604308, 755385, 906462, 1007180, 1359693, 1510770, 1812924, 2266155, 2719386, 3021540, 4079079, 4532310, 5438772, 6798465, 8158158, 9064620, 13596930, 16316316, 20395395, 27193860, 40790790, 81581580]

約数ペア:

[(1, 81581580), (2, 40790790), (3, 27193860), (4, 20395395), (5, 16316316), (6, 13596930), (9, 9064620), (10, 8158158), (12, 6798465), (15, 5438772), (18, 4532310), (20, 4079079), (27, 3021540), (30, 2719386), (36, 2266155), (45, 1812924), (54, 1510770), (60, 1359693), (81, 1007180), (90, 906462), (108, 755385), (135, 604308), (162, 503590), (180, 453231), (270, 302154), (324, 251795), (405, 201436), (540, 151077), (810, 100718), (1620, 50359)]