20559501

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 33400640

約数和(自身を除く): 12841139

約数列:

[1, 3, 9, 19, 27, 57, 61, 73, 81, 171, 183, 219, 243, 513, 549, 657, 1159, 1387, 1539, 1647, 1971, 3477, 4161, 4453, 4617, 4941, 5913, 10431, 12483, 13359, 14823, 17739, 31293, 37449, 40077, 84607, 93879, 112347, 120231, 253821, 281637, 337041, 360693, 761463, 1082079, 2284389, 6853167, 20559501]

約数ペア:

[(1, 20559501), (3, 6853167), (9, 2284389), (19, 1082079), (27, 761463), (57, 360693), (61, 337041), (73, 281637), (81, 253821), (171, 120231), (183, 112347), (219, 93879), (243, 84607), (513, 40077), (549, 37449), (657, 31293), (1159, 17739), (1387, 14823), (1539, 13359), (1647, 12483), (1971, 10431), (3477, 5913), (4161, 4941), (4453, 4617)]