21313072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1459}}^1$

素因数の和:1561

約数の個数: 40

約数和(自身を含む): 45622080

約数和(自身を除く): 24309008

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 166, 176, 332, 664, 913, 1328, 1459, 1826, 2918, 3652, 5836, 7304, 11672, 14608, 16049, 23344, 32098, 64196, 121097, 128392, 242194, 256784, 484388, 968776, 1332067, 1937552, 2664134, 5328268, 10656536, 21313072]

約数ペア:

[(1, 21313072), (2, 10656536), (4, 5328268), (8, 2664134), (11, 1937552), (16, 1332067), (22, 968776), (44, 484388), (83, 256784), (88, 242194), (166, 128392), (176, 121097), (332, 64196), (664, 32098), (913, 23344), (1328, 16049), (1459, 14608), (1826, 11672), (2918, 7304), (3652, 5836)]