21626820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{877}}^1$

素因数の和:1029

約数の個数: 72

約数和(自身を含む): 66155544

約数和(自身を除く): 44528724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 822, 877, 1233, 1370, 1644, 1754, 2055, 2466, 2631, 2740, 3508, 4110, 4385, 4932, 5262, 6165, 7893, 8220, 8770, 10524, 12330, 13155, 15786, 17540, 24660, 26310, 31572, 39465, 52620, 78930, 120149, 157860, 240298, 360447, 480596, 600745, 720894, 1081341, 1201490, 1441788, 1802235, 2162682, 2402980, 3604470, 4325364, 5406705, 7208940, 10813410, 21626820]

約数ペア:

[(1, 21626820), (2, 10813410), (3, 7208940), (4, 5406705), (5, 4325364), (6, 3604470), (9, 2402980), (10, 2162682), (12, 1802235), (15, 1441788), (18, 1201490), (20, 1081341), (30, 720894), (36, 600745), (45, 480596), (60, 360447), (90, 240298), (137, 157860), (180, 120149), (274, 78930), (411, 52620), (548, 39465), (685, 31572), (822, 26310), (877, 24660), (1233, 17540), (1370, 15786), (1644, 13155), (1754, 12330), (2055, 10524), (2466, 8770), (2631, 8220), (2740, 7893), (3508, 6165), (4110, 5262), (4385, 4932)]