20807840404

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{17579}}^1$

素因数の和:17729

約数の個数: 72

約数和(自身を含む): 42157402560

約数和(自身を除く): 21349562156

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 103, 169, 206, 221, 338, 412, 442, 676, 884, 1339, 1751, 2678, 2873, 3502, 5356, 5746, 7004, 11492, 17407, 17579, 22763, 34814, 35158, 45526, 69628, 70316, 91052, 228527, 295919, 298843, 457054, 591838, 597686, 914108, 1183676, 1195372, 1810637, 2970851, 3621274, 3884959, 5941702, 7242548, 7769918, 11883404, 15539836, 23538281, 30780829, 47076562, 50504467, 61561658, 94153124, 101008934, 123123316, 202017868, 305997653, 400150777, 611995306, 800301554, 1223990612, 1600603108, 5201960101, 10403920202, 20807840404]

約数ペア:

[(1, 20807840404), (2, 10403920202), (4, 5201960101), (13, 1600603108), (17, 1223990612), (26, 800301554), (34, 611995306), (52, 400150777), (68, 305997653), (103, 202017868), (169, 123123316), (206, 101008934), (221, 94153124), (338, 61561658), (412, 50504467), (442, 47076562), (676, 30780829), (884, 23538281), (1339, 15539836), (1751, 11883404), (2678, 7769918), (2873, 7242548), (3502, 5941702), (5356, 3884959), (5746, 3621274), (7004, 2970851), (11492, 1810637), (17407, 1195372), (17579, 1183676), (22763, 914108), (34814, 597686), (35158, 591838), (45526, 457054), (69628, 298843), (70316, 295919), (91052, 228527)]