668815048

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{400009}}^1$

素因数の和:400045

約数の個数: 32

約数和(自身を含む): 1440036000

約数和(自身を除く): 771220952

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 400009, 800018, 1600036, 3200072, 4400099, 7600171, 8800198, 15200342, 17600396, 30400684, 35200792, 60801368, 83601881, 167203762, 334407524, 668815048]

約数ペア:

[(1, 668815048), (2, 334407524), (4, 167203762), (8, 83601881), (11, 60801368), (19, 35200792), (22, 30400684), (38, 17600396), (44, 15200342), (76, 8800198), (88, 7600171), (152, 4400099), (209, 3200072), (418, 1600036), (836, 800018), (1672, 400009)]