19919564

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{30931}}^1$

素因数の和:30965

約数の個数: 24

約数和(自身を含む): 41572608

約数和(自身を除く): 21653044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 30931, 61862, 123724, 216517, 433034, 711413, 866068, 1422826, 2845652, 4979891, 9959782, 19919564]

約数ペア:

[(1, 19919564), (2, 9959782), (4, 4979891), (7, 2845652), (14, 1422826), (23, 866068), (28, 711413), (46, 433034), (92, 216517), (161, 123724), (322, 61862), (644, 30931)]