21917260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 48918240

約数和(自身を除く): 27000980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 380, 421, 548, 685, 842, 1370, 1684, 2105, 2603, 2740, 4210, 5206, 7999, 8420, 10412, 13015, 15998, 26030, 31996, 39995, 52060, 57677, 79990, 115354, 159980, 230708, 288385, 576770, 1095863, 1153540, 2191726, 4383452, 5479315, 10958630, 21917260]

約数ペア:

[(1, 21917260), (2, 10958630), (4, 5479315), (5, 4383452), (10, 2191726), (19, 1153540), (20, 1095863), (38, 576770), (76, 288385), (95, 230708), (137, 159980), (190, 115354), (274, 79990), (380, 57677), (421, 52060), (548, 39995), (685, 31996), (842, 26030), (1370, 15998), (1684, 13015), (2105, 10412), (2603, 8420), (2740, 7999), (4210, 5206)]