20272707

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 38133760

約数和(自身を除く): 17861053

約数列:

[1, 3, 7, 9, 13, 21, 27, 37, 39, 63, 91, 111, 117, 189, 223, 259, 273, 333, 351, 481, 669, 777, 819, 999, 1443, 1561, 2007, 2331, 2457, 2899, 3367, 4329, 4683, 6021, 6993, 8251, 8697, 10101, 12987, 14049, 20293, 24753, 26091, 30303, 42147, 57757, 60879, 74259, 78273, 90909, 107263, 173271, 182637, 222777, 321789, 519813, 547911, 750841, 965367, 1559439, 2252523, 2896101, 6757569, 20272707]

約数ペア:

[(1, 20272707), (3, 6757569), (7, 2896101), (9, 2252523), (13, 1559439), (21, 965367), (27, 750841), (37, 547911), (39, 519813), (63, 321789), (91, 222777), (111, 182637), (117, 173271), (189, 107263), (223, 90909), (259, 78273), (273, 74259), (333, 60879), (351, 57757), (481, 42147), (669, 30303), (777, 26091), (819, 24753), (999, 20293), (1443, 14049), (1561, 12987), (2007, 10101), (2331, 8697), (2457, 8251), (2899, 6993), (3367, 6021), (4329, 4683)]