21139380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13049}}^1$

素因数の和:13070

約数の個数: 60

約数和(自身を含む): 66320100

約数和(自身を除く): 45180720

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, 13049, 26098, 39147, 52196, 65245, 78294, 117441, 130490, 156588, 195735, 234882, 260980, 352323, 391470, 469764, 587205, 704646, 782940, 1056969, 1174410, 1409292, 1761615, 2113938, 2348820, 3523230, 4227876, 5284845, 7046460, 10569690, 21139380]

約数ペア:

[(1, 21139380), (2, 10569690), (3, 7046460), (4, 5284845), (5, 4227876), (6, 3523230), (9, 2348820), (10, 2113938), (12, 1761615), (15, 1409292), (18, 1174410), (20, 1056969), (27, 782940), (30, 704646), (36, 587205), (45, 469764), (54, 391470), (60, 352323), (81, 260980), (90, 234882), (108, 195735), (135, 156588), (162, 130490), (180, 117441), (270, 78294), (324, 65245), (405, 52196), (540, 39147), (810, 26098), (1620, 13049)]