20643540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{3547}}^1$

素因数の和:3656

約数の個数: 48

約数和(自身を含む): 58414272

約数和(自身を除く): 37770732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 97, 194, 291, 388, 485, 582, 970, 1164, 1455, 1940, 2910, 3547, 5820, 7094, 10641, 14188, 17735, 21282, 35470, 42564, 53205, 70940, 106410, 212820, 344059, 688118, 1032177, 1376236, 1720295, 2064354, 3440590, 4128708, 5160885, 6881180, 10321770, 20643540]

約数ペア:

[(1, 20643540), (2, 10321770), (3, 6881180), (4, 5160885), (5, 4128708), (6, 3440590), (10, 2064354), (12, 1720295), (15, 1376236), (20, 1032177), (30, 688118), (60, 344059), (97, 212820), (194, 106410), (291, 70940), (388, 53205), (485, 42564), (582, 35470), (970, 21282), (1164, 17735), (1455, 14188), (1940, 10641), (2910, 7094), (3547, 5820)]