638403939

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{241}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 985780224

約数和(自身を除く): 347376285

約数列:

[1, 3, 9, 23, 67, 69, 191, 201, 207, 241, 573, 603, 723, 1541, 1719, 2169, 4393, 4623, 5543, 12797, 13179, 13869, 16147, 16629, 38391, 39537, 46031, 48441, 49887, 115173, 138093, 145323, 294331, 371381, 414279, 882993, 1058713, 1114143, 2648979, 3084077, 3176139, 3342429, 9252231, 9528417, 27756693, 70933771, 212801313, 638403939]

約数ペア:

[(1, 638403939), (3, 212801313), (9, 70933771), (23, 27756693), (67, 9528417), (69, 9252231), (191, 3342429), (201, 3176139), (207, 3084077), (241, 2648979), (573, 1114143), (603, 1058713), (723, 882993), (1541, 414279), (1719, 371381), (2169, 294331), (4393, 145323), (4623, 138093), (5543, 115173), (12797, 49887), (13179, 48441), (13869, 46031), (16147, 39537), (16629, 38391)]