642664

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 1346400

約数和(自身を除く): 703736

約数列:

[1, 2, 4, 8, 11, 22, 44, 67, 88, 109, 134, 218, 268, 436, 536, 737, 872, 1199, 1474, 2398, 2948, 4796, 5896, 7303, 9592, 14606, 29212, 58424, 80333, 160666, 321332, 642664]

約数ペア:

[(1, 642664), (2, 321332), (4, 160666), (8, 80333), (11, 58424), (22, 29212), (44, 14606), (67, 9592), (88, 7303), (109, 5896), (134, 4796), (218, 2948), (268, 2398), (436, 1474), (536, 1199), (737, 872)]