20645640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57349}}^1$

素因数の和:57366

約数の個数: 48

約数和(自身を含む): 67099500

約数和(自身を除く): 46453860

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 57349, 114698, 172047, 229396, 286745, 344094, 458792, 516141, 573490, 688188, 860235, 1032282, 1146980, 1376376, 1720470, 2064564, 2293960, 2580705, 3440940, 4129128, 5161410, 6881880, 10322820, 20645640]

約数ペア:

[(1, 20645640), (2, 10322820), (3, 6881880), (4, 5161410), (5, 4129128), (6, 3440940), (8, 2580705), (9, 2293960), (10, 2064564), (12, 1720470), (15, 1376376), (18, 1146980), (20, 1032282), (24, 860235), (30, 688188), (36, 573490), (40, 516141), (45, 458792), (60, 344094), (72, 286745), (90, 229396), (120, 172047), (180, 114698), (360, 57349)]