18915105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 16336095

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 59, 67, 87, 145, 165, 177, 201, 295, 319, 335, 435, 649, 737, 885, 957, 1005, 1595, 1711, 1943, 1947, 2211, 3245, 3685, 3953, 4785, 5133, 5829, 8555, 9715, 9735, 11055, 11859, 18821, 19765, 21373, 25665, 29145, 43483, 56463, 59295, 64119, 94105, 106865, 114637, 130449, 217415, 282315, 320595, 343911, 573185, 652245, 1261007, 1719555, 3783021, 6305035, 18915105]

約数ペア:

[(1, 18915105), (3, 6305035), (5, 3783021), (11, 1719555), (15, 1261007), (29, 652245), (33, 573185), (55, 343911), (59, 320595), (67, 282315), (87, 217415), (145, 130449), (165, 114637), (177, 106865), (201, 94105), (295, 64119), (319, 59295), (335, 56463), (435, 43483), (649, 29145), (737, 25665), (885, 21373), (957, 19765), (1005, 18821), (1595, 11859), (1711, 11055), (1943, 9735), (1947, 9715), (2211, 8555), (3245, 5829), (3685, 5133), (3953, 4785)]