20787702

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 48371904

約数和(自身を除く): 27584202

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 61, 78, 102, 122, 183, 221, 257, 366, 442, 514, 663, 771, 793, 1037, 1326, 1542, 1586, 2074, 2379, 3111, 3341, 4369, 4758, 6222, 6682, 8738, 10023, 13107, 13481, 15677, 20046, 26214, 26962, 31354, 40443, 47031, 56797, 80886, 94062, 113594, 170391, 203801, 266509, 340782, 407602, 533018, 611403, 799527, 1222806, 1599054, 3464617, 6929234, 10393851, 20787702]

約数ペア:

[(1, 20787702), (2, 10393851), (3, 6929234), (6, 3464617), (13, 1599054), (17, 1222806), (26, 799527), (34, 611403), (39, 533018), (51, 407602), (61, 340782), (78, 266509), (102, 203801), (122, 170391), (183, 113594), (221, 94062), (257, 80886), (366, 56797), (442, 47031), (514, 40443), (663, 31354), (771, 26962), (793, 26214), (1037, 20046), (1326, 15677), (1542, 13481), (1586, 13107), (2074, 10023), (2379, 8738), (3111, 6682), (3341, 6222), (4369, 4758)]