21058365

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2061

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 15385155

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 1997, 2109, 3515, 5991, 9985, 10545, 29955, 37943, 73889, 113829, 189715, 221667, 369445, 569145, 1108335, 1403891, 4211673, 7019455, 21058365]

約数ペア:

[(1, 21058365), (3, 7019455), (5, 4211673), (15, 1403891), (19, 1108335), (37, 569145), (57, 369445), (95, 221667), (111, 189715), (185, 113829), (285, 73889), (555, 37943), (703, 29955), (1997, 10545), (2109, 9985), (3515, 5991)]