19968660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36979}}^1$

素因数の和:36997

約数の個数: 48

約数和(自身を含む): 62126400

約数和(自身を除く): 42157740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 36979, 73958, 110937, 147916, 184895, 221874, 332811, 369790, 443748, 554685, 665622, 739580, 998433, 1109370, 1331244, 1664055, 1996866, 2218740, 3328110, 3993732, 4992165, 6656220, 9984330, 19968660]

約数ペア:

[(1, 19968660), (2, 9984330), (3, 6656220), (4, 4992165), (5, 3993732), (6, 3328110), (9, 2218740), (10, 1996866), (12, 1664055), (15, 1331244), (18, 1109370), (20, 998433), (27, 739580), (30, 665622), (36, 554685), (45, 443748), (54, 369790), (60, 332811), (90, 221874), (108, 184895), (135, 147916), (180, 110937), (270, 73958), (540, 36979)]