64643187

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{8527}}^1$

素因数の和:8575

約数の個数: 24

約数和(自身を含む): 103973376

約数和(自身を除く): 39330189

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 7581, 8527, 25581, 59689, 162013, 179067, 486039, 1134091, 3078247, 3402273, 9234741, 21547729, 64643187]

約数ペア:

[(1, 64643187), (3, 21547729), (7, 9234741), (19, 3402273), (21, 3078247), (57, 1134091), (133, 486039), (361, 179067), (399, 162013), (1083, 59689), (2527, 25581), (7581, 8527)]