21502744

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 41403600

約数和(自身を除く): 19900856

約数列:

[1, 2, 4, 8, 61, 122, 139, 244, 278, 317, 488, 556, 634, 1112, 1268, 2536, 8479, 16958, 19337, 33916, 38674, 44063, 67832, 77348, 88126, 154696, 176252, 352504, 2687843, 5375686, 10751372, 21502744]

約数ペア:

[(1, 21502744), (2, 10751372), (4, 5375686), (8, 2687843), (61, 352504), (122, 176252), (139, 154696), (244, 88126), (278, 77348), (317, 67832), (488, 44063), (556, 38674), (634, 33916), (1112, 19337), (1268, 16958), (2536, 8479)]