21605996

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:673

約数の個数: 24

約数和(自身を含む): 38601360

約数和(自身を除く): 16995364

約数列:

[1, 2, 4, 89, 137, 178, 274, 356, 443, 548, 886, 1772, 12193, 24386, 39427, 48772, 60691, 78854, 121382, 157708, 242764, 5401499, 10802998, 21605996]

約数ペア:

[(1, 21605996), (2, 10802998), (4, 5401499), (89, 242764), (137, 157708), (178, 121382), (274, 78854), (356, 60691), (443, 48772), (548, 39427), (886, 24386), (1772, 12193)]