19717556

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{479}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 35562240

約数和(自身を除く): 15844684

約数列:

[1, 2, 4, 41, 82, 164, 251, 479, 502, 958, 1004, 1916, 10291, 19639, 20582, 39278, 41164, 78556, 120229, 240458, 480916, 4929389, 9858778, 19717556]

約数ペア:

[(1, 19717556), (2, 9858778), (4, 4929389), (41, 480916), (82, 240458), (164, 120229), (251, 78556), (479, 41164), (502, 39278), (958, 20582), (1004, 19639), (1916, 10291)]