81990012

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{40429}}^1$

素因数の和:40462

約数の個数: 36

約数和(自身を含む): 207163320

約数和(自身を除く): 125173308

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 40429, 80858, 121287, 161716, 242574, 485148, 525577, 1051154, 1576731, 2102308, 3153462, 6306924, 6832501, 13665002, 20497503, 27330004, 40995006, 81990012]

約数ペア:

[(1, 81990012), (2, 40995006), (3, 27330004), (4, 20497503), (6, 13665002), (12, 6832501), (13, 6306924), (26, 3153462), (39, 2102308), (52, 1576731), (78, 1051154), (156, 525577), (169, 485148), (338, 242574), (507, 161716), (676, 121287), (1014, 80858), (2028, 40429)]