21221860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5077}}^1$

素因数の和:5116

約数の個数: 48

約数和(自身を含む): 51186240

約数和(自身を除く): 29964380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 5077, 10154, 20308, 25385, 50770, 55847, 96463, 101540, 111694, 192926, 223388, 279235, 385852, 482315, 558470, 964630, 1061093, 1116940, 1929260, 2122186, 4244372, 5305465, 10610930, 21221860]

約数ペア:

[(1, 21221860), (2, 10610930), (4, 5305465), (5, 4244372), (10, 2122186), (11, 1929260), (19, 1116940), (20, 1061093), (22, 964630), (38, 558470), (44, 482315), (55, 385852), (76, 279235), (95, 223388), (110, 192926), (190, 111694), (209, 101540), (220, 96463), (380, 55847), (418, 50770), (836, 25385), (1045, 20308), (2090, 10154), (4180, 5077)]