21399756

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{683}}^1$

素因数の和:1070

約数の個数: 48

約数和(自身を含む): 57302784

約数和(自身を除く): 35903028

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 373, 683, 746, 1119, 1366, 1492, 2049, 2238, 2611, 2732, 4098, 4476, 4781, 5222, 7833, 8196, 9562, 10444, 14343, 15666, 19124, 28686, 31332, 57372, 254759, 509518, 764277, 1019036, 1528554, 1783313, 3057108, 3566626, 5349939, 7133252, 10699878, 21399756]

約数ペア:

[(1, 21399756), (2, 10699878), (3, 7133252), (4, 5349939), (6, 3566626), (7, 3057108), (12, 1783313), (14, 1528554), (21, 1019036), (28, 764277), (42, 509518), (84, 254759), (373, 57372), (683, 31332), (746, 28686), (1119, 19124), (1366, 15666), (1492, 14343), (2049, 10444), (2238, 9562), (2611, 8196), (2732, 7833), (4098, 5222), (4476, 4781)]