19918980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36887}}^1$

素因数の和:36905

約数の個数: 48

約数和(自身を含む): 61971840

約数和(自身を除く): 42052860

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, 36887, 73774, 110661, 147548, 184435, 221322, 331983, 368870, 442644, 553305, 663966, 737740, 995949, 1106610, 1327932, 1659915, 1991898, 2213220, 3319830, 3983796, 4979745, 6639660, 9959490, 19918980]

約数ペア:

[(1, 19918980), (2, 9959490), (3, 6639660), (4, 4979745), (5, 3983796), (6, 3319830), (9, 2213220), (10, 1991898), (12, 1659915), (15, 1327932), (18, 1106610), (20, 995949), (27, 737740), (30, 663966), (36, 553305), (45, 442644), (54, 368870), (60, 331983), (90, 221322), (108, 184435), (135, 147548), (180, 110661), (270, 73774), (540, 36887)]