19999226

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 33678288

約数和(自身を除く): 13679062

約数列:

[1, 2, 13, 26, 41, 73, 82, 146, 257, 514, 533, 949, 1066, 1898, 2993, 3341, 5986, 6682, 10537, 18761, 21074, 37522, 38909, 77818, 136981, 243893, 273962, 487786, 769201, 1538402, 9999613, 19999226]

約数ペア:

[(1, 19999226), (2, 9999613), (13, 1538402), (26, 769201), (41, 487786), (73, 273962), (82, 243893), (146, 136981), (257, 77818), (514, 38909), (533, 37522), (949, 21074), (1066, 18761), (1898, 10537), (2993, 6682), (3341, 5986)]