21420758

素因数分解:

$2^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1\times {\mathrm{503}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 11238442

約数列:

[1, 2, 107, 199, 214, 398, 503, 1006, 21293, 42586, 53821, 100097, 107642, 200194, 10710379, 21420758]

約数ペア:

[(1, 21420758), (2, 10710379), (107, 200194), (199, 107642), (214, 100097), (398, 53821), (503, 42586), (1006, 21293)]