8243180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 19141920

約数和(自身を除く): 10898740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 421, 445, 842, 890, 979, 1684, 1780, 1958, 2105, 3916, 4210, 4631, 4895, 8420, 9262, 9790, 18524, 19580, 23155, 37469, 46310, 74938, 92620, 149876, 187345, 374690, 412159, 749380, 824318, 1648636, 2060795, 4121590, 8243180]

約数ペア:

[(1, 8243180), (2, 4121590), (4, 2060795), (5, 1648636), (10, 824318), (11, 749380), (20, 412159), (22, 374690), (44, 187345), (55, 149876), (89, 92620), (110, 74938), (178, 46310), (220, 37469), (356, 23155), (421, 19580), (445, 18524), (842, 9790), (890, 9262), (979, 8420), (1684, 4895), (1780, 4631), (1958, 4210), (2105, 3916)]