20404780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{677}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 47156256

約数和(自身を除く): 26751476

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 548, 677, 685, 1354, 1370, 1507, 2708, 2740, 3014, 3385, 6028, 6770, 7447, 7535, 13540, 14894, 15070, 29788, 30140, 37235, 74470, 92749, 148940, 185498, 370996, 463745, 927490, 1020239, 1854980, 2040478, 4080956, 5101195, 10202390, 20404780]

約数ペア:

[(1, 20404780), (2, 10202390), (4, 5101195), (5, 4080956), (10, 2040478), (11, 1854980), (20, 1020239), (22, 927490), (44, 463745), (55, 370996), (110, 185498), (137, 148940), (220, 92749), (274, 74470), (548, 37235), (677, 30140), (685, 29788), (1354, 15070), (1370, 14894), (1507, 13540), (2708, 7535), (2740, 7447), (3014, 6770), (3385, 6028)]