21197308

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5413}}^1$

素因数の和:5517

約数の個数: 24

約数和(自身を含む): 40929840

約数和(自身を除く): 19732532

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5413, 10826, 21652, 59543, 119086, 238172, 481757, 963514, 1927028, 5299327, 10598654, 21197308]

約数ペア:

[(1, 21197308), (2, 10598654), (4, 5299327), (11, 1927028), (22, 963514), (44, 481757), (89, 238172), (178, 119086), (356, 59543), (979, 21652), (1958, 10826), (3916, 5413)]