19807916

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 35315280

約数和(自身を除く): 15507364

約数列:

[1, 2, 4, 109, 181, 218, 251, 362, 436, 502, 724, 1004, 19729, 27359, 39458, 45431, 54718, 78916, 90862, 109436, 181724, 4951979, 9903958, 19807916]

約数ペア:

[(1, 19807916), (2, 9903958), (4, 4951979), (109, 181724), (181, 109436), (218, 90862), (251, 78916), (362, 54718), (436, 45431), (502, 39458), (724, 27359), (1004, 19729)]