21905512

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{25121}}^1$

素因数の和:25236

約数の個数: 16

約数和(自身を含む): 41451300

約数和(自身を除く): 19545788

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 25121, 50242, 100484, 200968, 2738189, 5476378, 10952756, 21905512]

約数ペア:

[(1, 21905512), (2, 10952756), (4, 5476378), (8, 2738189), (109, 200968), (218, 100484), (436, 50242), (872, 25121)]