19911658

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2371}}^1$

素因数の和:2422

約数の個数: 32

約数和(自身を含む): 35864640

約数和(自身を除く): 15952982

約数列:

[1, 2, 13, 17, 19, 26, 34, 38, 221, 247, 323, 442, 494, 646, 2371, 4199, 4742, 8398, 30823, 40307, 45049, 61646, 80614, 90098, 523991, 585637, 765833, 1047982, 1171274, 1531666, 9955829, 19911658]

約数ペア:

[(1, 19911658), (2, 9955829), (13, 1531666), (17, 1171274), (19, 1047982), (26, 765833), (34, 585637), (38, 523991), (221, 90098), (247, 80614), (323, 61646), (442, 45049), (494, 40307), (646, 30823), (2371, 8398), (4199, 4742)]